C700 Laptop: Not booting: Black screen: No BIOS

My 4 years old Compaq Presario c700 (C794) laptop is not booting up. Does not go into BIOS, and does not even show the message “Press F10 to enter BIOS” etc.
I see a clear black screen (but has backlit and I am able to adjust the brightness using Fn keys). Tried on the desktop monitor, it is black too.
The HD is running intermittently, all LEDs are on, and the fan is running.
Windows is not booting up, there is no log on sound. WIFI light is also orange, it becomes green after booting is complete. HD activity is on but it is not as much to boot up Windows 7.
Troubleshooting I did till now:
Hard reset by holding down the power button several times.
Cleaned RAM and placed it in another slot.
Removed the power and battery and kept it overnight.
Tried on the desktop monitor, it is black too.
This happened all of a sudden. I did not do any BIOS updates or anything that normally causes these kind of problem. I learned from some forums that an exhausted CMOS battery can cause it. Is it true? In this case, can you please give the location of the CMOS battery in these laptops?
What are the other measures I can take?

Hello again Hazarika.
I'll keep an eye out for your reply to make sure the issue is resolved.
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GS70 - Does not boot - black screen with solid white dash

Sorry for the long post - I've been beating my head against this problem all day, filed a report ticket and really need help from anyone who has ideas.
Yesterday evening after finally relenting and allowing the patch Tuesday updates to install on my GS70 Stealth I tried to power on my computer and it remained stuck at the MSI logo. I waited 3 hours with no success before powering it off and attempting to access the bios by hitting the delete button. The screen turned black except for one non-blinking white dash near the center of the screen. This screen also remains indefinitely and requires a hardware power off to work. I've tried all of the function key presses and recovery shortcuts to no avail.
Eventually I tried to boot into linux via a live USB. I still could not access the bios but, to my surprise, so long as this USB is in my system, Windows happily boots. After this I tried to revert to a system restore point before the updates but that did not resolve the problem. I also tried to update the BIOS but there is no way to install BIOS updates that I know of that doesn't require accessing the old BIOS first (which I cannot do because the black screen with a white dash is still all that shows up). I tried forcing the UEFI bios to load through windows recovery settings with no luck either.
I've sent in an RMA/Support request and hopefully MSI will repair or replace my device but I sent it in for an RMA literally less than two months ago and to be having to do it again so soon is starting to turn me off of the product. For me to insure and ship my device to MSI costs a little over $100 each time which is rapidly turning this $1600 product into an $1800 one and turning me from an MSI brand loyalist to a 'one-star-review everywhere' evangelist. Is it possible that something MSI did during the last RMA screwed up my motherboard (they replaced the disfunctional steel series keyboard with a new marginally more functional steel series keyboard)? Does MSI ever cover the shipping costs for an RMA if the RMA is a result of damage that they caused to the device? Is there anything I should do to try to avoid burning more money trying to get a luxury-priced product I've already paid for to function?

i had similar problem myself on my first GS70 it has some sort of bios problem that it random hangs itself :/ causes OS not to boot and bios refuses to load but i managed to get my recovery USB to boot but not bios yet so i sent laptop off for repair they replaced the motherboard so i got it back then i had an faulty gpu :/ so i took it back and got money back so i bought new one some where else since than i havent had problem so this sort of problem sounds like bios firmware isnt booting propertly :/ so have you tried removing msata and HDD from laptop and then power laptop on? to see if bios gets forced on if so power it off put msata back on and so then power laptop back on and bios shall work again

Laptop not booting after I Upgraded BIOS

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Originally had issues with the left speaker making a horrible buzzing noise. Searching forums & help boards & the fact that I'm fairly computer Literate I came to the conclusion a OS reinstall was called for.
Since I only use this laptop for DJing theres only a couple of programs on it so it was not too much hastle.
Reinstalled OS Windows 7 updated it & all the drivers & the Buzz was still there.
This is when I read from a couple of users of Toshiba laptops said an upgrade of the BIOS helped them.
So I went to the official Toshiba support page & flashed my laptop using the following BIOS upgrade
ACPI Flash BIOS version 2.00 for Satellite A215 (PSAFGU/PSAFHU) 32/64-bit
Nearing the end of the flash my pc screen went black power lights are on, cord light on, battery light on just no OS
What I've tried.
Unplugged from power supply.
Removed Battery
Left for 20 mins & then tried to reboot.
Same thing happens each time
Power lights come on HD spins for a minute but nothing happens after that.
Any ideas why an official software update would cause my computer to not work & how do I roll back or clear my bios to default specs.

Finally I found a good Phoenix crisis copy at : http://mods.myftp.org/Tools/CrisDisk_and_Pen_Drive?_Recovery.rar
to download my own version of crisis disk with the new v2.0 rom bios. ready to build the floppy by running the crisdisk.bat:
http://rapidshare.com/files/410963513/CrisDisk.zip?.html
I posted this instruction to repair my A215 with these files:
Since finding a solution was a very confusing experience, here is how I fixed it (it should work for most similar models.)
Now read it all the way through because the steps are critical.
I got a Toshiba Satellite A215 PSAFGU (S6814) And after shutting down from overheating during a flash from windows it didn't boot. Black screen and nothing more. Meanning my bios was corrupt
So after lots of trial and error, using an external usb floppy drive I managed to save my laptop.
Maybe people here describe how to do it, but they tell you to download the wrong crisis recovery files and once you try to use your ROM instead of the one on the disk, or try to replace phlash16.exe it just fails. Tried injecting but that didn't work.
Finally I found a good Phoenix crisis copy at : http://mods.myftp.org/Tools/CrisDisk_and_Pen_Drive?_Recovery.rar
unrar and go to the directory, then unrar (you'll see it) CRISDISK.rar .
This copy of crisis with phflash16.exe (in the extracted directory) is a good version that can handle the newest versions of bios ROM.
Now copy your ROM file to the crisisdisk directory renaming the file to bios.wph and thus replacing the existing one.(i used the new 2.0 version ROM from the Toshiba site - in this case its called m10a200.rom)
To prevent 'dos path' errors when building the disk, copy the entire directory to a simple one like c:\cirsis
Build your disk now by running CRISDISK.BAT - the process includes quick formatting, copying the three files, and lastly making it bootable, make sure you go through all the steps. ( at first, i messed the last part by not having it bootable and it failed ofcourse)
once it says it created the disk successfully, put it in your external usb drive (or use the disk you created to make a bootable flash drive by using hp drivekey boot utility available here: http://h20000.www2.hp.com/bizsupport/TechSupport/S?oftwareDescription.jsp?swItem=MTX-UNITY-I23839 I didn't have a chance to test it with usb flash drives, but it should work.)
Now once you connected your media to the usb port on your laptop:
make sure the battery is out, power cord out, hold fn+f, while doing that, plug the cord and then push the power button, release the fn+f key once you see the light on your usb drive/usb floppy is starting to blink. it should pause for a few seconds, and then start reading the disk for a while (not just 3 seconds). Process should not take more then 10 minutes so waiting more then that is a waste(trust me). The computer should reboot byitself if everything is fine. Mine took about 5 minutes but give it 10 just to make sure.
After hours of finding, replacing, injecting, only this worked.
This works for sure, if you follow these instructions with your Toshiba Satellite A215. Don't loose hope - you will recover it.
A good sign is when using the fn+f method and it flashed the usb drive/floppy. It means its 99% recoverable.
Really hope this saves time for others.
This is a solution posted by yarivc on the USA Toshiba site.
http://laptopforums.toshiba.com/t5/System-Recovery-and-Recovery/Toshiba-Satellite-A215-S7422-bios-crisis-recovery/td-p/69185
BTW
to the last poster
If you were to ask 100 customers in any comp store who just purchased a Toshiba Laptop if they knew a OFFICIAL UPDATE from the manufacturers support website would VOID a warrenty I gaurantee not one of them would know that nor be impressed by it.
Further more what screwed up my bios was not the BIOS upgrade but the fact that Toshiba has a install from your desktop (windows) button in the update, researching this I found that one should never use this method because Windows in inherently unstable when it comes to BIOS update.
This option should NOT have been included in the update since its very unstable to do so.
On a side note.
My left speaker buzzing noise is back. But it doesnt seem too annoying right now concidering I saved myself money & headache.

Will not boot - Black screen A2 code on bottom right.

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When I tried to uninstall that program it wasn't even on my installed programs list, so I deleted the folder it was in. This didn't resolve the issue.
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I have triple checked that my SSD is the first in the boot order. I even disabled the HDD from the HD boot order entirely. No change...
I updated my motherboard drivers. No change.
It's almost like for whatever reason my BIOS isn't listening to the boot order and doing my DVD drive, HDD, and then the SSD ever since I installed that Gizmo ISO mounting program.
I set the BIOS to factory default settings. That did not fix this issue.
I have use a windows system restore point from 2 days ago when it was working flawlessly. No change.
I'm thinking about reinstalling Windows, but logically it doesn't make sense to do that since the error happens even if I power off/on from BIOS with the HDD plugged in, so it I'm willing to venture that it's not Windows at fault here.
Also the computer used to boot up in like 8 seconds. It's still fast to boot up, but ever since this started to happen, it takes like 15-30 seconds for my usb mouse, and usb keyboard to register after windows starts up. It use to be immediate. My computer is so messed up right now, and I don't even know how it got like this or how to fix it. I'm pretty savvy and can follow directions well, so any help would be greatly appreciated.

Quote from: JLio01 on 29-April-15, 06:56:47
What intel USB driver version do you use? There's one more thing to try, try plug the kb/ms to USB 3.0 ports except the ones under the LAN port, and check if it happens again.
I'm glad you recommended checking Intel drivers. I typed appwiz.cpl to go to the installed programs list in windows. Found "intel USB 3.0 extensible host controller". I tried uninstalling this. It made my mouse and keyboard not work for about 1 minutes. Windows downloaded some drivers for my devices, and asked to reboot. I rebooted. Mouse/keyboard responded right away! Just incase it was a fluke I rebooted another 2 times, and each time the mouse and keyboard are immediately responsive. I'm SO glad that my PC is back to it's original working order. Thank you to you all for taking time out of your day to help me. I really appreciate it!

Pavilion G6 2249WM powers on but does not boot - black screen

I have a G6 2249wm that had a message that the fan wasn't working. I had the fan replaced and after it was replaced it would not boot. I could hear the fan running and the caps lock light blinked once about every 5 seconds and the amber wifi light was on. After researching and taking steps outlined in the HP Computer does not start (Windows 8), I found that the code meant that the CPU was bad. I had that replaced and the notebook is still in the same condition. Is there anything else that I can do to get this computer to work?
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Hello @FLC123,
Welcome to the HP Forums, I hope you enjoy your experience!
I understand that your notebook computer is producing a blinking light from the caps lock, and that the screen is blank. I would be happy to help you!
Since this symptom code is appearing after you have replaced the CPU, I recommend contacting our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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System will not boot / black screen

:undecided:Problem: System does not boot. Black screen.
I just put this system together. I've returned the CPU and motherbd. for exchange, thinking one may be defective. Still No Boot. PowerSupply checks out good. MSI video card checks out good too. Could it be the memory stick? Pls. HELP. BTW - Yes, I did remember to plug in the 4-pin power connector.
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You got me there. I only looked at the LED's after it hangs.
I must wait for my reshippment of my memory. I returned it, and asked them to test it. If it tested good, then it probably not compatible with system. My next option was to order GIGARAM 1GB, since it is on the list of recommended DDR.
Sorry, I cannot reboot at the moment. Do you think it is the memory, or something else?
Thanks,

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Imac will not boot. black screen, no sounds.. but has power.

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First, boot and hold down mouse key to get CD out. then,
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Hello Nana53
Do you only run into the problem when you try to install just the Windows 7 update (KB2762895) or does it happen when trying to update any application? You said the screen is black, so how did you perform the system repair? Are you referring to the black screen as the screen goes black while windows is trying to load and you do see the BIOS and boot options?
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PLEASE HELP!! MY Toshiba L300 Laptop has black screen after Bios update

Hi, I was looking on Toshiba's website last night for an updated driver/software to fix my windows update which was not working. Whilst looking I had a message pop up saying Bois out of date and there was an updated verion, so I clicked update for my specific laptop, thinking that will be better. A window come up saying do not switch off. The the screen froze, and I could not do anything whilst it slowly updated, then the screen went black and remained that way for a considerable amount of time. I tried rebooting the laptop, it turns on, but bios will not load, the screen just remains black. Can anyone please help me, why would an update be on Toshiba's offical website if it does this?
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That doesn't appear to be a US model, and this is the forums for Toshiba USA. You may want to contact Toshiba in your region. If it's a European model, you could check the Toshiba Europe forums.
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Laptop won't boot; Black screen w/moveable cursor

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Recovery disks not solving black screen?

Hi!
I can not boot my laptop.
Preview:
Some day PC froze, for some reason, and i wiped out everything with Toshiba Recovery Wizard (dumb, lol).
Obvious went to geek store, they installed windows etc, so PC worked fine for a week. After a week, i have the Problem listed below. Took the laptop to the store, they reinstalled windows and somehow managed to recover my files (docs, pdfs, etc). After a week, the samething happened, so i ordered the Toshiba Recovery Disk after talking with Toshiba Support, and after explaining what had happened (Toshiba guy told me that the only solution would be with the cd's, since i don't have Toshiba Recovery Wizard anymore).
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Didn't work, same problem.
Changed the BIOS order, didn't work, same black screen.
So... How can i solve this? Is pretty strange that geeks can solve this problem and a Toshiba Recovery CD doesn't. Does the cd come with Windows?
It just sucks that i had to pay 35Euros for a piece that the Toshiba Assistant said would solve my problems after i explained those to him, just to receive this piece and won't be able to solve those.

In what country did you purchase the laptop?
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HP elitebook black screen after bios update

I recently bought a great condition HP elitebook 8440p. I installed a new hard drive 1TB hybrid hard drive ssd+HDD. I managed to get the computer working and everything was fine untill I decided to update bios. I searched up drivers and the first thing came up was bios update so I said to myself why not. After the program shut down my computer, I immediately noticed abnormal fan speed. There was no picture, and the panel lights were on and two lights (Cap lock and numlock) were blinking 3 times for 5 sets so (blink blink blink (Pause) blink blink blink (pause) blink blink blink (pause) blink blink blink (pause) blink blink blink. After that nothing else happenes. The other panel lights stay on and the fan continues to spin until i turn it off.
Things i have tried.
1. Installing update bios to 16gb flash drive, making it bootable and then sticking it into the USB port. Holding down Win+B. Also tried to hold down FN+insert , (Up+ down+ Left+ right), f10
2. Several hard resets (Holding down power button for 30 seconds, 1 min to 30 mins.
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I have same issue with my HP EliteBook 8440p.
I updated my bios throuh HP SoftPaq Download Manager and aftrer the reset the computer won't boot, I get a black screen and it lights up and fan is working.
Since my warranty expired and this is official HP software I am wondering who will cover the costs of the repair?
The laptop is currently in offical HP service for two weeks now and they are waitnig for a reply from HP central for a possible solution for the issue.
From what I read on HP support forums there is no fix and HP isn't in a hurry to answer on anyones questions about that which is very sad for a company I thought was professional... also, the surprising thing is that this is not a cheap laptop for the masses but a laptop which is built to last for professional users
The question remains, is there a fix for this issue and if not who is going to cover the cost of repair/replacement of the components/laptop?
Best regards,
Cole

C700 Laptop: Not booting: Black screen: No BIOS

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