Black screen after BIOS modification
Lunina16
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Hello, I made a modification to the BIOS of my desktop PC (Gigabyte motherboard) to enable an option that a game I wanted to play asked me to activate. It is the "secure boot." I followed a video to guide me: https://www.youtube.com/shorts/9RslJce9c4g?feature=share&ucbcb=1
I did exactly as shown in the video until 1m50, where I saved and restarted my PC. And it was from there that my PC turns on (fans are running, keyboard and mouse are lighting up) but I have no display on the screen, it is not receiving any signal (I have checked the source and the connections). Therefore, it is impossible to access the BIOS, let alone Windows.
It is worth mentioning that a few days ago I modified the BIOS to enable TPM 2.0 for upgrading to Windows 11, and I had no issues.
I have reset my motherboard twice using the two pins at the bottom right, but nothing has changed. I have also tried starting while removing my only storage SSD that contains the OS, still nothing.
I did exactly as shown in the video until 1m50, where I saved and restarted my PC. And it was from there that my PC turns on (fans are running, keyboard and mouse are lighting up) but I have no display on the screen, it is not receiving any signal (I have checked the source and the connections). Therefore, it is impossible to access the BIOS, let alone Windows.
It is worth mentioning that a few days ago I modified the BIOS to enable TPM 2.0 for upgrading to Windows 11, and I had no issues.
I have reset my motherboard twice using the two pins at the bottom right, but nothing has changed. I have also tried starting while removing my only storage SSD that contains the OS, still nothing.
3 réponses
Hello,
What you're saying is strange; it seems to me that for TPM on Windows 11, secure boot is mandatory...
You must have used the method to make Windows 11 compatible regardless of the settings, that's the only explanation I see.
Is the video source from the motherboard or the graphics card?
To restore the BIOS to default settings, you need to do a CMOS clear, check the motherboard manual, but often just unplugging the PC and shorting two pins next to each other on the motherboard with a screwdriver for about 5 seconds is enough, the location is indicated in the motherboard diagram.
Edit: apart from this method, I don’t see what else you can do; if it doesn’t work, the problem lies elsewhere, and it’s hard to diagnose without spare parts and a PC available beforehand.
What you're saying is strange; it seems to me that for TPM on Windows 11, secure boot is mandatory...
You must have used the method to make Windows 11 compatible regardless of the settings, that's the only explanation I see.
Is the video source from the motherboard or the graphics card?
To restore the BIOS to default settings, you need to do a CMOS clear, check the motherboard manual, but often just unplugging the PC and shorting two pins next to each other on the motherboard with a screwdriver for about 5 seconds is enough, the location is indicated in the motherboard diagram.
Edit: apart from this method, I don’t see what else you can do; if it doesn’t work, the problem lies elsewhere, and it’s hard to diagnose without spare parts and a PC available beforehand.
Lunina16
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To start, my video output comes from my graphics card; my processor doesn't have an integrated graphics part. For Windows 11, I performed the compatibility test with the official Microsoft software, which indicated that TPM 2.0 had to be enabled. That's what I did in the BIOS, then I ran the test again and my PC was good to go for Windows 11. Now I have it and I haven't had any issues regarding that. When I enabled secure boot, it was marked as "disabled" (I had never touched it before). All the components of my PC are new; I don't see how any of them could be problematic, especially after a BIOS modification. To me, it must be a software bug. As for the method with the pins, I've already tried it twice without success.
You don't understand that secure boot is mandatory for Windows 11. You say that the PC is compatible with Windows 11 without having secure boot enabled in the meantime; I don't understand, it's impossible.
Just because the PC is new doesn't mean it can't have issues; a dead hard drive or a faulty RAM stick is not insignificant, even if they're new.
Then for the clear CMOS, you should have a message when starting the PC that tells you the BIOS has been reset. Did you get that message?
Just because the PC is new doesn't mean it can't have issues; a dead hard drive or a faulty RAM stick is not insignificant, even if they're new.
Then for the clear CMOS, you should have a message when starting the PC that tells you the BIOS has been reset. Did you get that message?
I just cleared the CMOS, I was careful but there’s no signal on the screen. When I short the two pins, the PC turns on for a fraction of a second, turns off, and then turns back on by itself when I remove the screwdriver after 5 seconds. I noticed that the case, CPU, and GPU fans are running at full speed as if I'm in the BIOS of the PC. During a normal boot, the fans would spin fast for a few seconds before calming down once I get to Windows. But the problem is that pressing F2/Delete or not makes no difference, the fans continue to run fast while I have no BIOS on the screen.
The PC is still receiving fluctuating power to certain areas of the motherboard...
I mentioned earlier:
"you just need to unplug the PC and short-circuit some adjacent pins on the motherboard with a screwdriver for about 5 seconds, for example, the location is indicated on the motherboard diagram."
Edit:
More specifically,
Having the CMOS battery connected to the motherboard allows for the BIOS reset even without power.
Except for laptops, where in this case, you need to remove the battery and put it back while the power and battery are disconnected.
I mentioned earlier:
"you just need to unplug the PC and short-circuit some adjacent pins on the motherboard with a screwdriver for about 5 seconds, for example, the location is indicated on the motherboard diagram."
Edit:
More specifically,
Having the CMOS battery connected to the motherboard allows for the BIOS reset even without power.
Except for laptops, where in this case, you need to remove the battery and put it back while the power and battery are disconnected.
Same problem, I activated the TPM, installed Windows without issue, then some apps asked me to enable secure boot, which I did via the BIOS! Now I have a black screen with 5 short beeps (CPU error according to Gigabyte)...
I have done several CMOS resets but still the same issue...
I have done several CMOS resets but still the same issue...
If it can save you a bit of money, I dropped off my PC yesterday at a technician and he also heard the 5 beeps indicating a processor issue. He tested my graphics card on another setup and there were no problems, so the processor needs to be replaced. My processor is new, so I hope it should be fine. I hope yours is also recent or not too expensive.