Computer won't boot unless CMOS is Reset

[Firon]

After installing new graphic card on my computer, it's not working properly. When i start the computer it shows "cmos checksum error", it won't post and start again until the CMOS is reset. Any help will be extremely appreciated.

[deoWo]

The CMOS Checksum Bad Error is an error that occurs when the CMOS values are incorrect,You may try flashing (upgrading) your motherboard bios. You can download this from your motherboard manufacturers website. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values,The bios has become corrupt.

[RoninBlade]

If your BIOS has been updated recently, your CMOS settings may have become reset. Several listings name a bad battery for this. Even though this is a new build, try it. Replace the battery or at least take it out and clean the battery and socket.

[Rawko]

Attempt to reboot the computer. If error still occurs after rebooting the computer enter CMOS setup and check all values, this includes verifying the time and date are correct or the CMOS jumper is in the incorrect position, making poor contact, or there is no CMOS jumper at all. Once everything has been verified and/or changed make sure you save and exit CMOS setup.