CMOS Checksum Error, new battery doesn't help

[bobbybrady456]

I have a CMOS checksum error on my desktop computer. I've tried the following but computer still won't get past first screen

Inserted new battery
cleared cmos by pulling jumper block off of prongs then putting it back on prongs, there are only two prongs, not three
blew dust out of computer
tried a ps/2 keyboard
unplugged all hard drives and cd/dvd drives

Any help much appreciated

 

[bobbybrady456]

Also want to mention that computer says to push F1 but keyboard won't respond, tried a usb and a ps/2 keyboard. I'm running windows xp. Thanks.

 

[rclarke250]

Make and model please.

 

[MikeHalloran]

If you have a way to check the power supply, do that.

 

[bobbybrady456]

Tried new power supply did not work. This is a computer that was built for me, it's Windows XP, The motherboard is a Gigabyte 8I845PE-R2

 

[bobbybrady456]

It started working for some reason, I have six usb ports and I tried the keyboard in all of them and was finally able to get F1 to work. I am no longer getting the cmos checksum error. Still confused about what happened. Any ideas appreciated. Thanks.

 

[rclarke250]

ummm, solar flare? jk no idea, might be because it's winter, and got a shot of static.