I hope someone can suggest what might have happened to my PC and why I can get no further than the Press f12 for setup, press delete for BIOS screen.
I have an Acer T180 that I have had for around 3 years now, it has an Athlon 3800+ Dual Core processor. Everything in it is stock apart from some extra RAM I added a while ago.
Recently the Processor fan has been getting really noisy so I decided to replace and was recommended an Arctic Cooling system Arctic Cooling Freezer 64 Pro, AM2, All Sempron, Athlon 64 to 5000+, to FX -59, Opteron
which I then bought.
I installed the cooling system only to then realise it uses a 4 prong connection to the motherboard, not a 3 prong which my previous fan had.
I noticed that the 4 prong connector would fit onto the 3 prongs on the motherboard so (very stupidly) I decided to turn it on and see what would happen.
The machine turned on, the cooling unit turned briefly then stopped and it wouldn't let me get past the BIOS/Setup screen. I've tried 2 keyboards, neither USB, and with both, the PC did not seem to register my keypresses (f12 or Delete).
I have since re-installed the old fan and the problem is still there.
I know it's not a problem wit the keyboards, and the PC does seem to tick over 3 times like it's trying it start when I turn it on but it still doesn't get past the BIOS/Setup screen.
Any help would be really appreciated.