Motherboard Issues

[Matt_B]

I have a question for anybody with motherboard/processor knowledge.

My CMOS battery was on it's last legs, and when I moved my computer the other day (took the power cord out) it brings up a BIOS message saying "CPU has changed...." and gives me the option to press F1 to continue or DEL to reenter BIOS settings, the problem is my keyboard doesn't seem to be being recognised.

The keyboard works, I have tested on another computer. I figure the processor isn't shagged as it boots up to the BIOS post screen, but doesn't get far enough to boot from CD etc, so I figure it can only be the motherboard?

Any ideas? If my CMOS battery is completely dead would this cause this?

I have taken out and put back in all my RAM sticks so I know those are in correctly.

 

[Jeff]

Is it a wireless keyboard?

If it is try using a wired keyboard instead.

 

[Matt_B]

Nope it's a standard PS2, I brought a new one to test with, but thats a USB with PS2 adaptor, and I don't think it recognises USB that early in the boot up process. Either way they both work on a working computer. Normally I'm OK fixing computers, but this has me stumped!!

 

[Durham Fox]

I doubt changing the CMOS battery will help but I guess its worth a try.

 

[Matt_B]

I have brought a new motherboard and processor (dual core 3.4GHz!) in case it doesn't, I kind of hope it doesn't fix it so I can justify keeping the new setup!!

 

[Steven]

Any ideas? If my CMOS battery is completely dead would this cause this?

Quite possibly.

 

[Matt_B]

Fixed it. Installed the new motherboard and processor, lightening fast now