Question Black screen when trying to start UEFI BIOS

Jun 13, 2019
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I have a problem: my PC will not boot Windows 10, and when I try to load UEFI BIOS I just get a black screen.

Display seems to be working OK (I can see the ASUS logo on startup) and keyboard works too.

I've reset the CMOS battery and I'm now prompted to run Setup again:



But when I press F1 the screen goes black and nothing displays.


Some background...

Every now and then my SSD fails to boot into Windows 10. I bought this PC pre-built but added the SSD myself, so maybe I did something wrong while installing it? I'm not sure, but it's been this way for about 3 years and fails intermittently. Recently it's worked fine. And UEFI BIOS has always worked whenever the SSD failed.

Anyway, I recently restarted my computer and my SSD failed, so I looked into the UEFI BIOS. I can usually resolve the issue by powering down for a while, then booting into UEFI BIOS and making sure the boot order is correct. But it didn't work this time. I tried disabling and re-enabling the boot devices a few times, rebooting, etc. Nothing worked.

Then all of a sudden, UEFI BIOS stopped loading too.

I tried resetting the CMOS battery by taking it out for 5 minutes and replacing it again. I've also tried unplugging the power and holding the power button for 30 seconds. Neither worked.

Now when I boot my PC I'm prompted to run Setup to recover BIOS settings. I need to press F1 to do that, which works (that's how I know the keyboard still works). But after the screen goes black at this moment, it stays black forever.

Please help!
 
Jun 13, 2019
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Thanks for the reply! I did disconnect the SSD while I removed the battery, just to see if that would help. But I plugged it back in afterwards. Should I try booting with it disconnected?

And I'll try a new battery too. I think we have some knocking about in the house.
 
Jun 13, 2019
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Update: I tried replacing the battery with another. I've also unplugged the SSD. Neither has helped.

In fact, my situation is a little worse now. I read in other threads that the video output might be the issue. Well I tried an HDMI cable instead of the DVI and VGA connections I have, but it didn't help. But now, I don't even see the setup prompt any more. Just the ASUS logo, then black screen regardless of whether or not I press F2/Del to load BIOS.
 
Jun 13, 2019
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Hold up! (and sorry for the triple post)

I put the original battery back in and reconnected the SSD and it just started working.

massive shrug

I'm now back in Windows. Looks like the main issue of the thread was resolved I guess?? I'll update it it comes back!
 
Jun 13, 2019
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Hi @Petek16. Unfortunately I haven't had the time to dig into the cause of the problem. I still have intermittent problems where my SSD fails to boot (I just get a black screen after startup screen, and have to restart a couple of times to get it to boot into Windows). No idea why I'm afraid.
 
Nov 3, 2019
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@crowbarska @Petek16

I solved the problem it comes from nvram faulty you need to reflash your nvram but in asus devices bios upgrade installing into bios itself so if you want to reflash from windows you need to install it with ami bios tool
First of all its a reinstalling bios from AMI for all AMI bios devices if something goes wrong I am not responsible for any of that. But I test it almost 10 times. It happens on me because of hackintosh for you reason might be different.
Solution:
1-) Download latest bios for your device from asus web site
2-) Download AMI bios tool from bios mods link is in here: AMI BIOS
3-) Open that with administrator privilages Aptio\afuwin\64\AfuWin64\AFUWINGUI.exe
4-) Click open chose all files for file type from down right and select your ACCURATE BIOS FILE FOR YOUR DEVICE FROM ASUS.
5-) Click Setup Select Main Bios Image, Boot Block and NVRAM( You can choose just NVRAM but I dont recommended)
6-) Click Flash and make sure you have connected your PC to AC power.
7-) Restart. It takes few restart to install bios wait for 1 or 2 min top. Then all will be ok
 
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Nov 20, 2019
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@crowbarska @Petek16

I solved the problem it comes from nvram faulty you need to reflash your nvram but in asus devices bios upgrade installing into bios itself so if you want to reflash from windows you need to install it with ami bios tool
First of all its a reinstalling bios from AMI for all AMI bios devices if something goes wrong I am not responsible for any of that. But I test it almost 10 times. It happens on me because of hackintosh for you reason might be different.
Solution:
1-) Download latest bios for your device from asus web site
2-) Download AMI bios tool from bios mods link is in here: AMI BIOS
3-) Open that with administrator privilages Aptio\afuwin\64\AfuWin64\AFUWINGUI.exe
4-) Click open chose all files for file type from down right and select your ACCURATE BIOS FILE FOR YOUR DEVICE FROM ASUS.
5-) Click Setup Select Main Bios Image, Boot Block and NVRAM( You can choose just NVRAM but I dont recommended)
6-) Click Flash and make sure you have connected your PC to AC power.
7-) Restart. It takes few restart to install bios wait for 1 or 2 min top. Then all will be ok
Thanks very much for this, resetting my nvram worked, I can now get into the Bios!

Another way I used to reset the nvram is OpenCore bootloader, which has a wipe nvram option
 
Jan 14, 2020
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I'm having the exact same symptoms @crowbarska and have tried everything that fixed yours, but unfortunately did not solved the issue - still stuck with black screen after pressing F1 nor my Windows boots. Did anybody ever find out the cause or better a resolution ?
Many thanks - Peter
 
Feb 18, 2020
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@crowbarska @Petek16

I solved the problem it comes from nvram faulty you need to reflash your nvram but in asus devices bios upgrade installing into bios itself so if you want to reflash from windows you need to install it with ami bios tool
First of all its a reinstalling bios from AMI for all AMI bios devices if something goes wrong I am not responsible for any of that. But I test it almost 10 times. It happens on me because of hackintosh for you reason might be different.
Solution:
1-) Download latest bios for your device from asus web site
2-) Download AMI bios tool from bios mods link is in here: AMI BIOS
3-) Open that with administrator privilages Aptio\afuwin\64\AfuWin64\AFUWINGUI.exe
4-) Click open chose all files for file type from down right and select your ACCURATE BIOS FILE FOR YOUR DEVICE FROM ASUS.
5-) Click Setup Select Main Bios Image, Boot Block and NVRAM( You can choose just NVRAM but I dont recommended)
6-) Click Flash and make sure you have connected your PC to AC power.
7-) Restart. It takes few restart to install bios wait for 1 or 2 min top. Then all will be ok
I am having the same issue where I can’t enter my BIOS even though windows 10 Boots fine. This happened after trying to install MacOS on it (as a hackintosh) where Windows just started booting in the middle of the installation.

I want to try your sollution but the programme mentions that my ROM ID doesnt match my BIOS ID. I am certain that I chose the Right motherboard on Asus' website.

Do you by any chance know if it matters that the ID does not match?

Thank you!
 
Feb 23, 2020
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@crowbarska @Petek16

I solved the problem it comes from nvram faulty you need to reflash your nvram but in asus devices bios upgrade installing into bios itself so if you want to reflash from windows you need to install it with ami bios tool
First of all its a reinstalling bios from AMI for all AMI bios devices if something goes wrong I am not responsible for any of that. But I test it almost 10 times. It happens on me because of hackintosh for you reason might be different.
Solution:
1-) Download latest bios for your device from asus web site
2-) Download AMI bios tool from bios mods link is in here: AMI BIOS
3-) Open that with administrator privilages Aptio\afuwin\64\AfuWin64\AFUWINGUI.exe
4-) Click open chose all files for file type from down right and select your ACCURATE BIOS FILE FOR YOUR DEVICE FROM ASUS.
5-) Click Setup Select Main Bios Image, Boot Block and NVRAM( You can choose just NVRAM but I dont recommended)
6-) Click Flash and make sure you have connected your PC to AC power.
7-) Restart. It takes few restart to install bios wait for 1 or 2 min top. Then all will be ok
Thank you so much, bro! I've done a hackintosh and this probably messed up with my BIOS. I was already thinking in buying another motherboard after troubleshooting everything that was possible and have done CMOS a lot of times when i saw your post, after this i could access the BIOS with success in my Z270-P.
Again, thank you so much, you really saved me here.
 
Nov 3, 2019
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@Guapz you dont need to reflash full bios just
1-)find a usb drive format it with fat32
2-)find a opencore build it doesnt matter for which computer
3-)copy efi folder from build there are plenty of them in github
4-) boot from usb
5-) select reset nvram
 
Apr 4, 2020
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@valinor61 Hello ! I'm having the same problem, i have tried using the program you mentioned, i had the same error " ROM ID doesnt match my BIOS ID " i used a .CAP file from asus ( My mother model is asus 570x turf plus ) I was wondering if i could only press the option " delete nvram" from "AFUWIN". Cause I also have tried the re opening opencore. But thing is that i have cleared cmos from my BIOS and secure boot is enable and i can't access the pendrive :( And my keyboard apparently doesn't work in bios black screen cause i press f10 and nothing happens. Thank you so much for taking the time to read it
 
Nov 3, 2019
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@Takeba in keyboard you can press double tap to change logo yo can see ami logo it means you have same issue. Secureboot can be bypassed but its a tricky job. You need to use signed bootx64.efi file.
The guide is in this repo Sign EFI Bootloader
Also there are other versions of afuwin that might fix your issue.
You can also try Dos version with emulated dos but I dont know any secureboot supported usb dos emulator.
 
Apr 4, 2020
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@valinor61 ok thank you so much for your answer, is it fine if i @ you in case something goes wrong? I will try those things later. Once again it's really appreciated your reply !
 
Apr 4, 2020
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@valinor61 Hello ! I have followed the " Sign EFI Bootloader " guide. I'm able to load grub. What i am trying to do now is somehow put OC into that pendrive so i can boot it and wipe the nvram from the oc option. What i did was trying putting the whole folder into the same path ( into the EFI folder ) I also tried putting the .efi called "OpenCore.efi" into the EFI folder alone. Nothing worked, could you please tell me how can i load OC into that pendrive so i can boot it with Grub? Thanks again for taking the time to read !
 
Apr 4, 2020
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Update: I was able to restore bios this way. Only thing I had to move the right file to the boot folder. and then the rest of the files.

Thank you so much for all your help!

Edit: spelling
 
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