Cmos checksum error, wont go past

[zyx]

First off ehre are my specs:
p4 2.6c
mushkin black level 2, 2X512
Abit is7-e
western digital 250gig sata
radeon 9800 pro
antec truecontrol 550 psu

okay, so i took these componenets out of my shuttle and put them into my lian li tower, it booted up fine the first time, went into windows and wtayed in wondows perfectly, even rebooted fine. then i changed 3 fans from the psu to a fan controllor that was already being used. Then i booted up and it says error, no keyboard. so i plugged it into the usb and that went away. now i get a CMOS checksum error. it says press delete for bios and f1 to continue, but neither of these work. it also makes a noise like a low fast clicking. I cant figure out how the hell to fix this and to boot up, ive unplugged it, reset cmos, and take nout the cmos battery a million times, and i ve put the system back to the way it was, still it doesnt work. PLEASE HELP ME!

 

[Dan17]

I'm not exactly sure why this would be happening but I have several idea's you can try to may'be solve the problem:
1) Some USB keyboards will not be detected by the BIOS when it is booting up. This may be the source of the checksum error (I know stretching it a little). This checksum error only happened once you changed the keyboard from the ps/2 port to usb port so this could be the problem. Switch the keyboard back to the ps/2 port.

2) If you receive the checksum error again, try a different keyboard. (Just in case)
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I did a search on the web and came up with this:
Checksum Error Website
this site includes of reasons for the problem occuring and ways to solve the problem

This site should hopefully solve your problem, good luck
...Dan