I got an exchange of my K7S5A/2000+ combo from Fry's yesterday, but now my new board doesn't power-up and post when I press the power button. It goes into an endless loop of trying to post, restarts, and tries to post again. I have to turn off my PC, then press the power button again to start up the PC. After that it finally gets into BIOS, but I get the following error everytime: "CMOS/GPNV Checksum Bad". This has happened 3 times already. If I shutdown and wait about 2 or more minutes, I get the endless loop problem, and then the checksum error. However, when I shutdown and turn the PC back on within 30 seconds, it boots up normally. And I did flash to the latest BIOS. This problem did not happen to my previous exchanged board, so what's wrong here? Thnx.