I've run into a major problem with my PC and I'm at my wit's end! I suspect that I accidentally changed a crucial setting in the BIOS, and now my computer won't post at all. When I try to boot it up, I can't get any kind of display, just a black screen. I really need some guidance on what I can do to fix this mess!
2 Answers
What exactly did you change in the BIOS right before everything went haywire? Was your PC working fine before this? If you could provide context on what setting you were trying to adjust—especially if it was RAM-related—that would be super helpful!
Also, I noticed a yellow 'DRAM' light on while the PC is running—should I be worried about that?
If you're sure that the BIOS changes caused this, don't waste time with system restore since it won't fix the issue. We really need to know your motherboard model to help. A common problem is that you might have set your PC to boot from the onboard video instead of your dedicated GPU. Try connecting your monitor to the onboard video port and check if that works. Don’t forget to ensure your monitor isn't set to a different input!

I was trying to adjust a setting to optimize my RAM, but it turned out that the setting I wanted was already enabled. I don’t recall the name of it, but after saving what I thought were benign changes, I was greeted by a screen from American Megatrends directing me back to the BIOS. I tried resetting to default settings, but now it's just a black screen with a powered-on PC.