Unable to boot and install Windows 8.1 from a DVD

Hi, I have an ENVY 17 (3277nr) with windows 8.1 in it but I'm unable to update it since several months ago so I decided to reinstall the OS so I went to the windows site that lets you download an ISO image of windows 8.1 to burn it into a disc (right now I dont have a 4gb usb at hand but is also possible).
I already burned the disc by right clicking the ISO and selecting 'burn disc image' and changed the boot options but every time I turn on my computer all I see is a single underscore and then the regular windows 8 boot screen.
I already visited help wbesites in this regard and I've read things like the windows 8 UEFI thing (not on my laptop since I've upgraded from w7) and the security settings on the BIOS but none of them seem to fix the problem.
Additional details:
Oddly, when trying to open the burned dvd it only says 4.37gb out of 4.37gb, do you think my dvd drive might be damaged?
PLEASE, HELP ME OUT, BEEN 4 DAYS OF THIS HELL :/
This question was solved.
View Solution.

@killerpollo ,
Hello and thank you for posting on the HP support forum. The first thing I would try in this situation is to download and burn the ISO from another computer.
If you have already set your boot options to boot to CD/DVD and a new dvd is still not reading you may have a hardware issue with your dvd drive.
Does the DVD drive read dvds when you have booted up to windows?
As well I would try putting the image on a USB drive and try that.
I find on occasion when I use the windows software to make an ISO it is hit and miss. There are other software out there that you can try and some are free or what is known as share ware.
Now even if you burn a good image you started with a Windows 7 system. The actual image is more than a UEFI and you will not be able to read it if you system is set as a legacy system.
here are some things you will want to check out.
Boot UEFI or Legacy ---- tips
About UEFI and the Startup Menu
Free Image burn website.
Now if your system came with Windows 7 the product key that you have for your system will not work for Windows 8.1. This is one thing you will want to consider.
Let me know how things go.
Thank you again for posting and have a great day,
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP

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Does the DVD drive read dvds when you have booted up to windows?
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I find on occasion when I use the windows software to make an ISO it is hit and miss. There are other software out there that you can try and some are free or what is known as share ware.
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Thank you again for posting and have a great day,
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP

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For Boot Camp issues please repost in the Boot Camp forum located by clicking Boot Camp

[Guide] Install and run Windows 7/8 from an external drive without using bootcamp (works for late 2012 iMacs with 3TB drive)

This is a copy of a post from my blog, you can also Read it on my blog...
Introduction
After I received my new iMac with a 3 TB Fusion Drive, I was disappointed when I realized that Bootcamp was not running on this model and prevented me from installing Windows on it. I wanted to take advantage of the powerful iMac hardware to play games but I couldn't.
There are a few ways of working around this limitation, but I found most of them quite complex and most of the time they required formatting the internal hard drive or repartitioning it and go for a brand new installation of Mac OS X. I was not comfortable with that.
But there is another way, and that is to install Windows on an external hard drive, using either USB or Thunderbolt. Personally I used a Lacie Rugged 1 TB drive that has both USB3 and Thunderbolt connectors. Both work very well.
This guide may interest you if:
You have an internal hard drive of more than 2TB and you can't run bootcamp at all (like late 2012 iMacs with a 3TB drive)
You have limited space or you don't want to dedicate disk space on your internal hard disk drive to a Windows installation
What this guide will make you do:
It will make you erase all your data from your external USB3/Thunderbolt hard drive
It will make you install Windows on your external USB3/Thunderbolt hard drive
It will make you install bootcamp drivers
What this will not make you do:
It will not make you modify anything on your internal Mac hard drive
It will not make you use or install the bootcamp assistant
It will not activate the Preference Pane for the default boot drive. You have to boot by pressing the ALT key to manually select your boot drive each tome you want to boot Windows.
What you'll need
An external hard drive with a USB3 and/or Thunderbolt connector. This drive will be formatted so ensure you saved your files before going further. You can use either an SSD drive or a classic hard drive.
A Windows 7 or 8 install DVD or ISO (check whether to install 32 or 64 bits versions based on your Bootcamp drivers) and the corresponding Windows serial number.
One of the following:
Mac OS X with a Windows 7 or 8 Virtual Machine (use VMWare Fusion or Parallels Desktop for example. Note: VMWare Fusion seems to have some issues with Thunderbolt and USB3. Plug your drive to a USB2 enclosure or hub to work around this -it worked for me-, or use another VM software) → Read the important note below
A PC running Windows 7 or 8 → Read the important note below
Windows AIK (free) running on your Virtual Machine or on your PC, or just the imagex.exe file (the rest of the Windows AIK package is not needed)
Download imagex.exe
Download Windows AIK (this download and installation is not required if you have already downloaded imagex.exe)
Bootcamp drivers for your Mac. You can get these either by running bootcamp from your Mac (Applications > Utilities > Bootcamp) or, if like me you have a 3TB drive and can't run bootcamp at all, use the direct download links here.
A USB stick to store your bootcamp drivers
IMPORTANT: If your Mac has a 64 bits processor, your Windows Virtual Machine on OSX, your Windows installation on your PC and your Windows DVD/ISO must also be in 64 bits!
Step by Step guide
Step 1: Get the install.wim file
If you have a Windows ISO file:
Mount the ISO
If you're on OS X: double click on the ISO file
If you're on on Windows 7: Use a software like Virtual Clone Drive (free)
If you're on Windows 8: double click on the ISO file
Open the mounted drive, then go to the "sources" folder and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
If you have a Windows DVD: open the "sources" folder on the DVD and locate the "install.wim" file. Save this file to C:\wim\ on your Windows installation or virtual machine.
IMPORTANT: If instead of a "install.wim" file, you have "install.esd", you can not continue this step by step guide. And an ESD file can not be converted into a WIM file. So you must get a version of the Windows installation DVD/ISO that has an install.wim file.
Step 2: Clean, partition and format your external hard drive
On your Windows installation or virtual machine, plug in your external hard drive (can be plugged using USB2, USB3 or Thunderbolt at this stage)
Open the command prompt in administrator mode (cmd.exe). To run it in administrator mode, right click on cmd.exe > Run as admin.
Type the following and hit enter to open the disk partitioner utility:
diskpartType the following and hit enter to list your drives:
list disk
This will display a list of disks mounted on your computer or virtual machine. Make sure your drive is listed here before you continue.Identify the disk ID of your external hard drive. Replace # by your real external disk ID in the command below:
select disk #Clean all partitions by typing the following (warning: this will erase all data from your external drive!):
clean
Create the boot parition by typing the following followed by the enter key:
create partition primary size=350
This will create a 350MB partition on your external driveFormat the partition in FAT32 by typing the following:
format fs=fat32 quick
Set this partition to active by typing:
active
Assign a letter to mount this partition. We will use letter B in our example. If B is already used on your PC, replace B by any other available letter:
assign letter=b
Windows will detect a new drive and probably display a pop-up. Ignore that.Create the Windows installation partition using all the remaining space available on the external drive by typing the following:
create partition primary
Format the new partition in NTFS:
format fs=ntfs quick
Assign a letter to mount this partition. We will use letter O in our example. If O is already used on your PC, replace O by any other available letter:
assign letter=o
Windows will detect a new drive and probably display a pop-up. Ignore that.Exit the disk partitioner utility by typing:
exit
Step 3: Deploy the Windows installation image
Still using the command prompt in admin mode (you didn't close it, did you? ), locate the imagex.exe file mentioned in the "What you'll need" section and access its folder. In our example, we have put this file in C:\imagex\imagex.exe
Type the following and hit enter (remember to replace o: with the letter you have chosen in the previous step):
imagex.exe /apply C:\wim\install.wim 1 o:
This will take some time. The Windows installation image is being deployed to your external driveOnce done, type the following to create the boot section (remember to replace o: and b: with the letters you've chosen in the previous step):
o:\windows\system32\bcdboot o:\windows /f ALL /s b:
If you get an error message saying that you can't run this program on your PC, then most probably you are running on a 32 bits installation of windows and you're trying to deploy a 64 bits install. This means you did not read the important notes in the beginning of this guide
If you get an error message on the options that can be used with the BCDBOOT command, then it's because you're installing Windows 7, and the /f option is not supported. If that is the case, remove /f ALL from the command and retry.
Step 4: Boot from your external drive and install Windows
Plug in your external drive:
If you've done all the previous steps from a Windows PC, unplug your external drive from your PC and plug it to your Mac, either on a USB3 or a Thunderbolt port.
If you've done all the previous steps from your Mac using a Virtual Machine, ensure the external drive is plugged in to a USB3 or Thunderbolt port. Using USB2 should also work but you'll get very poor performance so I don't recommend doing that.
Reboot your Mac and once the bootup sound is over, immediately press the ALT (option) key and release it only when the boot drives selection screen appears. If you did not get the boot drives selection screen, reboot and try again. The timing to press the ALT (option) key is quite short. It must not be too early or too late.
On the boot selection screen, choose "Windows" using the arrow keys on your keyboard, then press enter.
The Windows installation starts. Follow the on-screen instructions as normal. The installation program will restart your computer one or 2 times. Don't forget to press ALT (option) right after the bootup sound, and boot on Windows again each time to continue the installation.
Step 5: Install bootcamp drivers
Once the Windows installation is complete, plug in the USB stick where you stored the bootcamp drivers (see "what you'll need" section), open it and right click on "setup.exe" and select "Run as admin". Follow the on-screen instructions.If you have an error saying that you can't run this program on this PC, obviously you have installed a 32 bits version of Windows and the bootcamp drivers for your Mac are made for a 64 bits version. You have to restart the whole guide and make sure to get a 64 bits version of Windows this time!
Once the bootcamp drivers are all installed, reboot and press ALT (option) after the bootup sound to boot on Windows again. And Voilà, you have Windows installed on your USB3/Thunderbolt drive running on your Mac.
Now each time you want to boot on Windows, press and hold the ALT (option) key after the startup sound and select "Windows", then press Enter.

Hi i'm trying to follow your guide, I installed windows 8 on bootcamp to do it planning to remove it after the operation is done, but i get stuck at part 3: every command i give to imagex i get a pop-up ftom windws asking how do I want to open this kind of file install.wim and imagex does nothing, what do i have to do to stop those pop-ups?

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Did you download and install the Windows Support software? If you did, did you use the Boot Camp Control icon to set up the trackpad how you want it?
http://www.apple.com/support/bootcamp/
https://discussions.apple.com/community/windows_software/boot_camp

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Hello,
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Anyone know if this works or if its possible.
Thanks

i use a thunderbolt ssd for my boot disc and it appears that bootcamp appears to start ok. in disk utility i can partition the drive successfully so i would be really interested if this would work. personally i cant see any problems.
are you thinking about formating the drive and installing windows without bootcamp? that will definately not work!
however with bootcamp you stand a very good chance of achieving your wish. please keep us posted if you decide to do this.
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JoSerra

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