I have replaced the battery on the board, but still the bios acts as if the battery is low. If I keep it plugged in at the wall while its off it remembers the time and settings and boots fine. Unplugged for just a few minutes and it says CMOS checksum errors, so i have to load defaults and set the time and then F10 save it and then boot. Its a version 1 board with F14 bios. Has worked great for about 2 yrs. Any help welcome, or can i return it for repair out of warranty. Thanks.