I'm having some issues with what I think is my processor fan. My PC has been making a loudish noise for a couple of weeks and as far as I can identify, it's the processor fan.
I tried accessing my bios to check/change the fan speed, but when I pressed the key to enter bios (delete for my motherboard) I just got a black screen (I've seen some stuff about wireless keyboards, which is what I am using, not working until windows has booted, but it seems that the computer is recognising it but just going to a black screen for some reason).
After sitting on this black screen a while, I turn the power off, my computer restarts and then the noise is gone. When I turn my PC on the next time, the noise is back and the process repeats.
Any ideas on what is causing the problem? Do I need a new processor fan? Also any ideas on why I can't get into my bios?