Computer won't boot, displays checksum error

[stirredo]

My PC won't boot on being switched on......it won't display anything on monitor and the lights on

keyboard won't blink(they normally blink once on being switched on). Sometimes when i am lucky it

would start when i press the reset button after keeping the computer switched on for like 4-6 hrs(with a

checksum error).

I have already replaced the mobo battery with new one and i am still facing the problem.

Any idea how to fix it?

 

[jsc]

After you get into the BIOS, try saving the default data.