I'm putting together my second PC build after a long break (the first one was a decade ago). I've got an Asus Prime Z790-P Wifi motherboard paired with an Intel i9 14900KF CPU. When I power it up, everything turns on—the lights and fans are running—but my monitor just keeps flashing 'no input' and eventually goes to sleep. I've read that this could be due to the motherboard needing a BIOS update for the CPU to be recognized. However, it looks like there's no dedicated BIOS flashback button on this board, and I can't access the BIOS menu since I'm not getting any display. I thought about using the CPU from my old PC to boot into BIOS, but it's the wrong size for the new motherboard. What should I do?
3 Answers
You might want to check if your motherboard supports updating BIOS without any display. Some boards have that feature, and if yours does, you could do it without needing to see anything on the monitor.
Some motherboards allow for BIOS updates via USB even without a working display. Check your manual; it might have the option, but I know it often needs a specific button. If you can't find it, consider reaching out to Asus support for guidance!
I figured it might have that ability, but I can't find a flashback button anywhere. I’ll definitely contact support for help.
Do you have a dedicated GPU installed? If so, make sure your monitor is plugged into it, not the motherboard. The i9 14900KF doesn't have integrated graphics, so if you're trying to use the motherboard's ports, that could be the issue.
Yes, I plugged the monitor into the GPU, but it’s still not working. What should I try next?
That would be great! I’ll look into that option more.