Legacy vs uefi

Hi all,
First of all I'm a new Lenovo user and realy love the hardware!
I have however a strange behaviour with UEFI on my new T540p. At least I think this is strange behavour for UEFI.
When I set the boot mode to UEFI it takes 8-10sec longer to boot than when I set it to legacy mode.
The difference in time is located between pushing the power button and the actual starting of windows. Loading windows itself takes equal time in both modes.
Latest Bios version is installed and all other bios settings are the same
By my knowledge UEFI should be faster to boot...
Any one else noticed this behaviour and or has a solution for it?
Many thanks
Solved!
Go to Solution.

Are you using UEFI only or autodetect?
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

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How to use WMI to query to distinguish legacy and UEFI mode Windows?

How to use WMI to query to distinguish legacy and UEFI mode Windows?

This document covers requirements for UEFI support.
http://msdn.microsoft.com/en-us/windows/hardware/gg463144.aspx
One of the requirements seems to be ACPI. The Win32_BIOS class of WMI has a BIOSCharacteristics property that indicates if ACPI is supported. See this link for properties exposed by Win32_BIOS:
http://msdn.microsoft.com/en-us/library/aa394077(v=VS.85).aspx
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[REQUEST] Legacy and UEFI BIOS for R9-280X 3G

Hello, can you please post the latest legacy and uefi bios for my MSI "R9-280X 3G BF4"
Serial Number: 602-V277-28SB1311072602
Reason: I'm experiencing flickering issues and both my first and second bios are flashed with custom ones.

Quote from: Svet on 15-February-15, 23:36:08
attached below
Thank you very much, but which one is legacy and which one is uefi?
I got two files - TV277MH.330 and TV277MS.330

Change the already installed Win 8.1 BIOS mode from Legacy to UEFI

Hey,
It seems that my Windows 8.1 is installed in BIOS mode: Legacy as "msinfo32.exe" shows. I can boot into it with no issue, but when I go to my laptop's BIOS settings and change the mode back to UEFI, it gives me an error "Operating system not
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I am just wondering if it is possible to change the Windows 8.1 BIOS mode to UEFI so when I change the laptop's BIOS settings back to UEFI, it can boot into it?
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Hi Amin CiscoSoft,
Since UEFI mode need an EFI system partition (ESP) which has the partition type ef00, usually contains a FAT32 file system. We need to recreate the partitions needed for booting the installation media in UEFI mode.
Before you doing that we VERY recommended for you to read all contents including Prerequisites and warring paragraph in links below, then perform a backup of your data. If you have a second disk drive big enough, you can simply create a system image and
able to recover the full installation as it was before you started this procedure if anything goes wrong.
Since the steps are complicated, please follow the steps in
http://social.technet.microsoft.com/wiki/contents/articles/14286.converting-windows-bios-installation-to-uefi.aspx
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Migration from legacy to UEFI/GPT

Hi everyone. I have an old laptop with Arch installed. I would like to move the ssd with Arch from old laptop to the new one. This wouldn't be a problem if the new laptop supported legacy boot nad mbr, but it doesn't. Is it possible to create partition images, repartition the drive in gpt, restore images and boot arch (with prior modifications on needed files and services, ex. grub)? If it is can someone please point me in a right direction?

You'll also want to look into the different boot managers available for UEFI before diving in, since they all have their own quirks. Gummiboot is the simplest to set up, with functionality somewhat similar to Syslinux. You can just mount the ESP as /boot, run "gummiboot install," write a simple configuration file and leave it at that. Simply using efistub is even simpler but is subject to the quirks of your particular firmware and might require a little trial-and-error; GRUB and rEFInd have more functionality, but are just a little bit more complex to set up.

Gaming 5 mixed legacy and uefi boot order problem

Hi,
I've got an issue with my gamin 5 mainboard regarding uefi/legacy boot order.
System setup:
. M.2 SSD (recognized as pci-e device) with a working windows 7 o.s., bootable from uefi bios.
. Normal hard drive on SATA port 1
. cd/dvd/blu-ray burner on SATA port 3 (from here on calling it the 'dvd drive')
I've tried to boot from a backup program's emergency cd to make a drive image of my ssd's O.S. partition, but the uefi cd/dvd boot option doesn't recognize the disc as being bootable. Setting it to legacy cd/dvd worked fine so that's probably because disc isn't uefi compatible. So, for that reason I've enabled the 'legacy + uefi' mode and added the legacy cd/dvd option to the top of the boot order list. Problem is, the system doesn't want to boot from the SSD anymore.
Here are some things I've tried:
When I set the boot order to: 1) uefi cd/dvd, 2) uefi windows boot manager, and NO disc in the dvd drive, the system boots from the SSD.
This is correct.
When I set the boot order to: 1) uefi cd/dvd, 2) uefi windows boot manager, and a non-uefi disc in the dvd drive, the system also boots from the SSD.
I think this is correct too because legacy cd/dvd is required to boot a legacy disc, right?
When I set the boot order to: 1) legacy cd/dvd, 2) uefi windows boot manager, and there is NO disc in the dvd drive, the system won't boot at all. Saying: "reboot and select proper boot device or insert boot media in selected boot device and press a key".
If I put a non-uefi disc in the dvd drive, the system boots from the dvd. The backup software also recognized all devices, including the SSD.
And if I go to the bios boot menu (F11), I can select the uefi windows boot manager and the system correctly boots into the O.S.
In 'the old days' , having a boot order like that, the system would skip an empty dvd drive and continue on to the next item in the boot priority list. Somehow, this system does not.
What am I doing wrong here?
I do have an old bios though. v1.2. Although looking at the descriptions of the newer bios versions, I don't see any mention regarding this issue.

I don't have an answer for you, I too wonder why the bios doesn't just skip a bootable device if it's empty.
I had to use a UEFI USB key to update bios and figured to leave it as the first boot after updating for further updates and I received the same message so had to move the UEFI USB back down the line.
Not the same as the old days Bios I guess.
When it's looking for the boot device it needs to see it or else.

Boot UEFI or Legacy ---- tips

If your PC or laptop supports UEFI and legacy mode then the following tips may help you. Legacy enabled:If the bios setting is legacy enabled then hard drives and USB devices will normally boot. If you are using two independent hard drives that are not connected by boot manager then the UEFI boot hard drive will always boot first before the legacy hard drive unless the bios allows you to change the boot priority. Legacy disabled (UEFI mode):If the bios setting is legacy disabled then only UEFI devices will boot. You may run into no hard drive selection menu, no boot option menu or Boot Device not Found followed by a message Hard Disk (3f0). USB flash drives boot considerations:If you wish to boot up a USB flash device using Windows 7 repair, Windows 8 repair, Windows 7 or Windows 8 installation media then be sure to create the flash drive formatted as FAT32. You may notice a bootable flash drive showing twice in the boot menu, one marked UEFI and one not marked UEFI. Both will boot up. The popular MS Windows 7 USB WIndows installation media creation tool will create a NTFS flash drive using a Windows 7/8 iso file in NTFS format which is not bootable in UEFI mode. It works fine in legacy mode. To get around the NTFS issue, create the flash drive in NTFS then copy the contents to your hard drive, quick format the flash drive to FAT32 and then copy back the contents back to the hard drive. There are other known methods to do the above but this method is very simple.

i have a HP Sleekbook 14-b035tx which came with a windows 8 OS installed already. due to some reasons, i tried to shift it back to windows 7. After many unsuccessful tries, i finally managed to install windows 7 by changing my boot sequence to Legacy Boot.
later on, due to lack of drivers for win 7, i installed, rather upgraded to win 8 which was running on legacy boot (using MBR if im not wrong). now, i want to install a fresh copy of win 8 with UEFI but the problem is when i change my boot sequence to disable legacy boot, then during installation of win 8, i cannot see my HDD ... im using a flash drive to install win 8 which is already in UEFI (i used diskpart for that).
also, when i use legacy boot and try to install windows, then the HDD appears and when i format the HDD and create new partitions, it creates 3 partitions (System, MSR, Reserved) and the fourth one for OS. i tried installing the windows like this but after install, when i change the boot sequence to UEFI again, it fails to boot
now, i want to install windows to UEFI... and i really need help with this please ... i hope i have explained the scenario... if anyone would like to ask anything, please do ... as i really need to get this away... and also, i'd like to ask that how can i check if my HDD has been changed from MBR to GTP

Cannot Access BIOS or Boot Windows 8 After Changing UEFI BIOS to Legacy BIOS

Acer V7-751, 500G HD, Windows 8.
I changed the BIOS settings from UEFI to Legacy BIOS when I was working on a problem. Now I can't even get into the BIOS (F2)
or change the Boot Order (F12). All I get is an error "Operating System not found". I can boot with a Win7, Win8, or Win8,1 DVD. I suppose I could boot with just about anything else bootable as well.
The problem seems to be caused because it's set to Legacy BIOS and Secure Boot Manager as default #1 boot device. Legacy BIOS
can't boot a Win8 drive that has been installed under UEFI (Secure Boot). I have to change the BIOS back to EUFI to boot the WIn8 drive, but the only way to change the BIOS is from within Win8. It's a very flawed way of doing things but it's the way it is.
Does anyone have any suggestions that they KNOW work. Please don't Google answers. I've already done that. And please (please)
don't tell me to power on and press "F2" (or any other key) to go into BIOS. If I could do that I wouldn't be posting.
Once again, I cannot get into the BIOS without going into Windows first. I cannot load Windows because the install was done
under UEFI. I cannot change from Legacy to UEFI because I can't get into the BIOS.

In this case, I flashed the BIOS with a newer version of the BIOS/Firmware and that returned everything to the Defaults (not Legacy BIOS). I believe you could also flash with the same version. I don't think you could flash with an earlier version, but no harm
in trying it. if you've flashed the BIOS previously, you may be able to restore the previous copy. It all depends on the manufacturer and how they handle flashing the BIOS.
I wasn't able to, but you may also be able to boot from a correctly formatted USB drive with another OS (Windows XP/Vista/7) because Legacy BIOS allows you to boot from external devices. Essentially, you need to be able to boot from a valid OS that is not on
the Hard Drive that was configured using the UEFI BIOS setting.
Please let me know if you have any more questions, and I'll do what I can to help. If this solves your problem, please mark my post as the answer. Thank you.

Prepare an usb thumb drive, to boot windows 7 or 8 in UEFI mode

Purpose of this post:
Prepare an usb thumb drive, to boot windows 7 in UEFI mode and install the system in pure UEFI mode.
Why am I writing this:
I had a hard time finding out how to make a custom installation of windows 7 in pure UEFI mode, and avoid using the factory restore disks. After hours of research, experiments etc I finally got the point and found a solution. And I'm happy to share my research with you. I hope this will be of help. If something is not clear, or more information is needed, I will be glad to explain things further.
History:
As most of you already know, BIOS was developed for PC in early eighties and has remained unchanged in recent years. But, since 2000, Intel started working on a new firmware interface, called Extensible Firmware Interface, abbreviated EFI. And since 2005 United EFI Forum has been handling the responsibility for development, management and promotion of UEFI specifications. Bigger companies like Intel, AMD, Microsoft and Dell have already started to bring out their products in accordance to UEFI standards which has more stable, secure and easier to use interface.
How does UEFI works (in a nutshell):
Once you power on the UEFI based PC, the Pre-EFI is executed which initializes only the CPU, memory and the chipset. This followed by Driver Execution Environment (DEX) where other hardware is initialized.
Advantages of UEFI:
    It can integrate various drivers this will not require to load during booting so saves time.
   PC can connect to network without OS.
   Also integrated drivers allow rendering GUI based control panel which out dates the old school bluish BIOS screen.
   Not all the installed hard drives are scanned as boot drive is set during the installation of OS in UFFI.
   Applications like anti-virus and diagnostic tools can be stored on virtually any non-volatile storage devices attached to a PC.
For a system to boot and install in UEFI the partition table of the HDD should be GPT (GUID Partition Table), not the old school MBR (master boot record). GPT has many advantages, can have virtually an unlimited number of partitions (windows will allow only 128) and impressively big partitions.
Since UEFI has a lot of advantages why not having a system install and boot in UEFI mode? AFAIK new Lenovo notebooks/netbooks are UEFI capable and OS’s are already installed in pure UEFI mode.
So, let’s go now to the point. Do you want to have more control over your HDD? Let say, you have a 320GB HDD and you have divided it in two partitions, one of 50GB, for your Windows 7, and the remaining for your data. If something goes wrong and you need to restore your system to factory default, with the recovery disks, it will wipe your partition scheme, set the system to default and this way your data will be lost.
You may want to make a “vanilla” installation of windows from a USB thumb drive and avoid using factory recovery disks. Now here things get complicated. A standard preparation of the USB with Microsoft’s software (Windows 7 USB/DVD Download Tool), or other tools, will give you a bios installation, not a UEFI one. So for the system to boot, you will need to change some settings in bios, and changing it from UEFI to legacy bios. The installation will prepare the HDD in MBR partition table, and you will lose all the advantages of UEFI, described above.
Now this can be avoided, by properly preparing an USB to boot and install in UEFI mode. Here are the steps:
Step by step tutorial:
1.   In a windows computer, download a legal copy (although trial) of the windows 7 os. You can do this from here: http://www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/
Be sure to download the same version that came preinstalled in your computer. For example, if you have a Lenovo x120e, with a Windows 7 professional, 64bit, download an iso image of the Windows 7 professional 64bit.
2.   Once downloaded burn the iso to a USB thumb (at least 4GB) using Windows 7 USB/DVD Download Tool.
3.   After preparing this, create a folder on your computer, name it whatever (i.e. W7pro64bit). Go to the root of your USB
and select all the files and folders there (9 in total) copy, and paste to your folder you created, W7pro64bit.
4.   Using windows format the usb again in FAT32. Windows 7 USB/DVD Download tool, formats it in NTFS. We need a FAT32 formatted disk to achieve our goal. Formating again the USB in FAT32 will not touch the MBR of the USB thumbdrive. And after copying back the files (see step 6) the USB will still be bootable. (nice, and simple, isn't it?)
5.   Now go to the folder W7pro64bit and do the following:
a.   Browse to W7pro64bit\sources\ and open install.wim file. It’s a big file, and can be opened as an archive with 7zip (free software). Do not extract it, do not modify it, just browse the file with 7zip. Just to be sure you do not mess with that file, you can copy it somewhere else in your computer, and than procede.
b.   Browse this file (install.wim) to \1\Windows\Boot\EFI\ and locate the file bootmgfw.efi. Do not move, delete it, but just drag that file to the desktop. (if you have copied the file install.wim to another place in your computer, than you are safely do whatever you want with that file ) Close the 7zip program to release the install.wim file.
c.   Rename the file you just copied to the desktop from bootmgfw.efi to bootx64.efi.
d.   Now go back to w7pro64bit folder and browse \efi\Microsoft. Form there copy the folder boot and paste it one level up, on the folder: \efi. It will look like this: \efi\boot.
e.   Now copy the file you saved on your desktop and renamed (bootx64.efi) to \efi\boot (inside the boot folder you copied on step 5d
6.   Now go to the root of the folder W7pro64bit and select all folders and files (9 in total) copy, and paste all those files back to your USB thumb drive. (see step 4 for more info)
7.   Go to the computer that you are going to reinstall, and before restarting it, use the program ABR (activation backup and restore) to backup the license of your windows os. (use google to find ABR). Advanced Tokens Manager (ATM ) is great too. This link may be of help: Backup and restore W7 activation. After the program finishes its magic, it will create a few files inside the folder where the program itself reside. Copy these files to a new folder in your usb. Rename it to ABR so you will quickly find it later. (if you decide to use ATM, the procedure may be a little different. But you are smart enough to figure out how to use it)
8.   Backup to an external storage all your data before continuing.(reminder: are you sure you saved the license as explained in step 7, to a safe place? To a external drive, to another computer? If you are sure, than go on with step 9)
9.   Now restart your laptop, and enter your bios settings. Go to the boot settings, and set the computer to boot in UEFI only. Not both, not UEFI first, or legacy, BUT UEFI only. Save and restart.
10.   Press f12 (or the corresponding key for your machine) to choose the boot device and chose to start from the USB thumb drive with your windows 7 pro 64 bit.
11.   If everything is done correctly, your computer will boot from the USB.
12.   Follow the wizard and choose a custom install, not upgrade. At the disk partition window delete all the partition you see there until you have only one unallocated space.
13.   Select it, and click next to install windows, without making partition in this point. The installer will create a GPT partition table not a MBR since the USB booted in UEFI mode.
14.   Immediately after the first restart remove your USB thumb, and the installation will continue from the HDD. Wait until installation finishes.
15.   When you will be finally on your desktop, on the installed OS plug your USB go to the ABR folder and click on restore.exe. It will restore your license and your copy of windows will be activated.
16.   Now you can go in computer management/disk management and shrink the HDD to create your partitioning scheme. Make sure to leave enough space to your windows os. (30gb or more for extra programs you will install at your choice)
17.      Download from lenovo.com thinkvantage system update and update your system. Windows update too can install all the necessary drivers, if you need only basic drivers support.
Note: if tvsu will fail to work, see this:
http://forums.lenovo.com/t5/ThinkVantage-Technologies/ThinkVantage-System-Update-Servers-down-the-wh...
It may look a looong tutorial, but once you do this for the first time, it will look a piece of cake.
Final words:
From now on, you can install windows 7 in UEFI mode with your special USB without changing your partition scheme anymore. If you have a data partition beside your os partition (see the example above), when you reinstall the system using your USB thumb drive, at the disk partition window chose the partition where windows is installed, delete it, and reinstall windows to the unformatted area. Your partition with your data will be intact and the installation will automatically mount your data partition to the system. And, all the scope of this procedure, you will always have a pure UEFI installation of the system, with all its benefits.
Have fun!
abvasili
Moderator note: changed subject to match new content. Was: Prepare an usb thumb drive, to boot windows 7 in UEFI mode
I'm just a volunteer. I like to help others where I can. Do my ideas work? I hope so. o_O
Who helped you today? Do not forget to thank him.
My hardware: TP x120e 0596-2ru. Windows 7, sp1, 64Bit, English, installed in UEFI mode.

seanare wrote:
Thank you, as I noted here, your post was the key to my getting a Windows 8 SecureBooting setup on a W530.
In the case of Windows 8, I needed to copy the files away, reformat my USB key as FAT32 and copy the files back, and viola I was able to boot from my USB install media with the BIOS set to only boot UEFI. From there, there rest was easy (for Windows 8, the copying and renaming is not necessary, the key is having a FAT32 partition on the USB media, rather than an NTFS one; the EFI files are already in the right location).
Thank you again good sir.
You are welcome... and I'm happy that the change of the file system helps with windows 8 too. Thanks for confirming that.
abvasili
I'm just a volunteer. I like to help others where I can. Do my ideas work? I hope so. o_O
Who helped you today? Do not forget to thank him.
My hardware: TP x120e 0596-2ru. Windows 7, sp1, 64Bit, English, installed in UEFI mode.

NO Lenovo Windows 8.1 Recovery DVD for CLEAN INSTALL! + unable to Install UEFI MODE

Hi,
I Just bought 25 Thinkpad T431s Laptops for my company (@ISRAEL)
All of them came with windows 7SP1 Installed And Recovery is Windows 8 (not 8.1 even though 8.1 is out for a yr!)
The Install process takes 3 Hours!!! Just for upgrading to windows 8.
Then I need to upgrade to 8.1 - the process is about 3 hours more! Because I need to Register And create Microsoft account for each user then to verify the account.
After that I need to Log with the account to the PC And then Download the update (3.5GB) And Install it.
IS ANYONE AT LENOVO THINKS THAT ITS ACCEPTABLE?
DO I WORK FOR LENOVO? DO I NEED TO SPEND 6 HOURS FOR UPGRADING EACH LAPTOP?
Don't forget that after that I need to uninstall all the bloater from the PC. Like Symantec AV (Because Enterprise company's uses Enterprise Class AV, FW And other software. We uses Kaspersky Enterprise, ESET, And others...)
AND ABOVE ALL.
If I want to Install Original Windows 8.1 I can't!
Because the OS Recovery DVD is not bootable And contain special recovery files with special extensions. Also, there is no PRODUCT CODE! Just "WINDOWS 8" sticker logo on the back of the notebook.
SO I WANT TO KNOW WHERE AND HOW(!)
I CAN GET A WINDOWS 8.1 ORIGINAL ISO IN ORDER TO INSTALL IT ON ALL MY PC's.
I want to know why I can't Install Just the "OPERATING SYSTEM RECOVERY DISK" (A standard clean Install)
== When I tried with my own Windows 8.1 Pro VL \ RETAIL ISO to Install it didn't pass activation==
==================== not even with the extracted key from the bios=====================
FYI - WHEN I BUY DELL OR HP LAPTOPS I'M GETTING A WINDOWS 8.1 PRO X64 BOOTABLE DVD DISK in addition to the 2 DVD RECOVERY DISKS. (So I am able to Install windows Without all the that you And them put into the recovery disk set).
Customer service in ISRAEL said that this is not possible! And that the only way is:
1. Use the 3 DVD recovery disks to format And Install windows 8.0
2. Register the user with a Microsoft account
3. Log in to each PC with his own Microsoft account
4. Download 8.1 update from Microsoft store
3. Install the 3.5GB update.
4. uninstall all the bloater.
So can I please ask you to confirm the answer I got from LENOVO ISRAEL. If So, ill return the laptops And that will the last time ANY OF MY COMPANY'S WILL EVER BUY ANY NOTEBOOKS OR TABLETS FROM LENOVO!
In addition, im trying to figure out how can I contact Lenovo main office to file a complaint against Lenovo Israel.
CEO Ms. Sigal didn't do anything to try And solve the issue, the product manager Mr. Many talk with me on the phone And was very rood. At the end he hang up the phone in my face! After I proved him wrong in another issue (T440s T431s cannot be installed with UEFI Because External DVD drive does not support UEFI Install only Legacy. And there is a big different between Legacy And UEFI)
Thank you.
Moderator note; profanity / implied profanity edited. Forum Rules

Hi ohad, welcome to the forums,
I'm sorry to read about your experience.
I don't work for Lenovo but it would appear to me that something may have gone wrong at the sales / purchasing stage; to my knowledge the T431s is only available with Windows 7 preload, (with Win 8 recovery discs in some cases as you have), or with Windows 8 preload. A Win 8.1 preload doesn't appear to be available for the system, but I stand to be corrected on this. If you required Windows 8.1, in my opinion the better option of the two, would have been a system with the Win 8 preinstall as this would only require updating to Win 8.1
Unfortunately I also can't envisage Lenovo creating a factory image for the T431s because it must be pretty near end of life.
You might find the following to be of interest;
http://forums.lenovo.com/t5/Windows-8-and-8-1-Knowledge-Base/Why-can-t-I-boot-from-a-USB-key-on-UEFI...
Andy ______________________________________
Please remember to come back and mark the post that you feel solved your question as the solution, it earns the member + points
Did you find a post helpfull? You can thank the member by clicking on the star to the left awarding them Kudos Please add your type, model number and OS to your signature, it helps to help you. Forum Search Option T430 2347-G7U W8 x64, Yoga 10 HD+, Tablet 1838-2BG, T61p 6460-67G W7 x64, T43p 2668-G2G XP, T23 2647-9LG XP, plus a few more. FYI Unsolicited Personal Messages will be ignored.
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Boot lenovo B590 in uefi

Hello, I just bought a B590 lenovo laptop and I want to do a clean install. I want tu install windows 8.1 from a usb stick in UEFI mode. I have another laptop and there it boots fine in uefi mode. But I can't figure out how to set it for this B590. I can only boot in legacy mode from the usb stick, using these settings: http://forums.lenovo.com/t5/Lenovo-3000-and-Essential/Lenovo-B590-wont-boot-from-usb-key/td-p/123187...
I hope somebody can help me.
Thanks in advance

hi bosiwow,
Welcome to the Forums.
If your BIOS is the same as the one below, can you set the following options (if applicable):
Credits goes to this website for the image.
Startup Tab:
UEFI/Legacy Boot = UEFI Only
- UEFi/Legacy Boot Priority = UEFI First
- CSM Support = Disabled
Security Tab:
Secure Boot = Disabled
Exit or Restart Tab:
OS Optimized Defaults = Other OS / Disabled
When done, press F10 to save and exit. Once the lenovo screen pops up, press F12 for the boot menu and see if the USB flashdrive is selectable.
Let me know how it goes.
Regards
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Requesting legacy BIOS firmware for N750TI-2GD5TLP

This may be different from most of the UEFI requests. I have an older computer (supermicro X7QCE) that requires legacy BIOS support (or hybrid bios support) and also requires the low profile version of the card or I would have gotten the version with a switch between the two.
SN: 602-V809-319SD1501091120
As the motherboard shows no signs of recognizing the card, I can't easily retrieve the current bios version with my computer. If it is absolutely needed for a downgrade to a legacy BIOS, I can use a friend's computer. I thought I 'd check here first.
There's no hardware problem with the PCIe slot as I'm using a zotac gt 740 right now, and no power restriction problems.
I don't know the terminology that well as far as GOP or vBIOS, so sorry if Im using the terms incorrectly.

Quote
Actually, NM, I found the answer in another thread. The switch explicitly switches between EFI mode and legacy BIOS mode.
These are not just modes. The switch allows to use the card with a plain legacy vbios or a UEFI/GOP (hybrid) vbios.
Quote
As this is the case, I can come to no conclusion other than there is a problem in the EFI/legacy mode handoff in the vbios for essentially every other version of the gtx750ti.
Like already said UEFI or legacy is not the only problem that can stop the card from working in an older computer but the support for later cards in general.
Quote from: flobelix on 22-May-15, 17:46:07
We don't know what "Supermicro" computer you have and what it works with since we are not Supermicro support. Legacy and UEFI mode or GOP compliance is not the only things that determine if a card runs in your machine. Newer cards must work at all on that older machine what is not guaranteed on oem machines that are very rarely updated. With latest gen vgas that is surely a problem and has nothing to do with the vga's vbios. Only Supermicro can tell you if current generation vgas are supported.
Quote
I guess if I want to get this card to work and not just return it, I'll have to hack the firmware. Dont suppose there's any tools for making that any easier?
Get used to the fact that the problem is not the card or it's vbios but your pc's oem mainboard and it's lacking support for newer cards. Else it would at least work with card switched to the legacy vbios.

MSI GTX 750 Ti with Motherboard Legacy BIOS

I was wondering if I could run the MSI GTX 750 Ti with a Legacy BIOS. I recently purchased an EVGA GTX 750 and it is not compatible with my motherboards Legacy BIOS (had no idea before purchasing it). I know MSI's has a Dual BIOS switch on the card, so I was wondering if it would work?
I have a pre-built HP system, the HP P7-1233w. I know the GTX 750 Ti has a TDP of 60w, my power supply is a 300w HP with two +12v rails. The +12va has 12a and the +12vb has 16a.
So if anyone can tell me if the MSI GTX 750 Ti (specifically this card: MSI N750TI-2GD5/OC) will work with my Legacy BIOS Motherboard that would be appreciated.
Thank you in advance!

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What does the Dual BIOS switch do on the card? Does it relate to the motherboard BIOS, or no?
No, it offers a legacy and UEFI/GOP vbios for Win8 feature support (fastboot/secureboot). If using a board with a legacy bios it is irrelevant what vbios is selected as both are supporting legacy mode (UEFI/GOP vbios is hybrid). Only for boards with a UEFI bios which is not GOP compliant using the legacy vbios is required.

Gtx 970 gaming 4g and legacy bios

Hi all,
As a newbie im looking for some assistance if at all possible.
ive got a hp pavillion h8-1070uk
8gb ddr3 ram,
ipisb-ch board with bios version 7.12 (lastest version)
gt545 3gb existing card installed
be quiet 630w psu with 48a output.
I'm trying to install a gtx970 gaming 4g and like a few others on here im getting to the bios screen then nothing further. Ive read one post (which i cant find now) that there is a bios upgrade for the card to enable legacy bios over uefi (which I've been told is causing the problem).
is there such an upgrade available ? and how would i install it on the card if i cant get to a boot screen ??
Thanks in advance

Quote from: flobelix on 16-November-14, 01:56:11
There is no legacy vbios for a GTX970 but just hybrid vbios versions supporting legacy and UEFI booting. These vbios versions will not work on older boards with a UEFI vbios not being GOP compliant. However UEFI or legacy vbios is NOT your problem as the system would else not post at all and you would not even see the bios screen. What you experience is a compatibility issue seen on many oem machines that are not updated properly. For socket 1155 board a ME8 bios is required to run vgas of the current generation.
I don't suppose this is a variant on the same issue as the one I've posted about elsewhere on this forum (https://forum-en.msi.com/index.php?topic=184769.0)? I have a socket-1366 i7-950 on a legacy-BIOS ASUS P6X58D motherboard, which still has perfectly decent CPU performance for everything I need of it and I'm loathe to replace.
ASUS haven't updated the BIOS since 2012, and I'm on that version; the oddness is that whether the system boots or not depends on how I've connected my monitor and whether there's more than one.
I do see when googling around there are people using the same card with the Rampage II and other similar X58 boards of that era, so there may be a quirk specific to this board, card and place.

[REQUEST] UEFI/GOP vBios for my N780 TF 3GD5/OC

N780 TF 3GD5/OC
S/N: 602-V298-050B1401022512
h t t p s://www.sendspace.com/file/m6q9px
Just one question, if I flash my vbios, will it still boot in legacy mode if i need to, or it'll just work in uefi mode?
Thank you!

Use the attached.
Decompress the provided .rar archive with Winrar: http://www.rarlab.com/download.htm
Then flash the included file with Nvflash for dos: http://www.guru3d.com/files_details/nvflash_download.html
To do so rename the included file to .rom and create a dos bootstick (https://forum-en.msi.com/index.php?topic=165175.0)
Put nvflash and the vbios file on it and boot from the stick. Then type nvflash -4 -5 -6 gop.rom (if renamed vbios that way) and hit enter. Confirm the questions and let the tool flash.
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Just one question, if I flash my vbios, will it still boot in legacy mode if i need to, or it'll just work in uefi mode?
A UEFI vbios is hybrid hence it works in legacy and UEFI mode.

Legacy vs uefi

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