Occasionally while booting my Lanparty DK P45 T2RS board shut off before it completes POST then reboot and I get a checksum error. sometimes it says the cpu has changed. I have tried clearing both CMOS jumpers, replaced CMOS battery, have done tests on ram, switched PSU. I have also flashed the BIOS to the latest non beta version. The computer never crashes and runs games very smooth at the highest graphic settings. It seems to me that the problem is with the BIOS but I would appreciate some input. Also I should say this only happens about 1 in 50 boots which makes it even more puzzling to me.

Computer Specs:
DFI Lanparty DK P45 T2RS
LGA775 Yorkfield Q9300 Quad 2.5ghz
2 ATI Radeon 4870HD
8 Gigs PC2 6400 ram
1200W Coolmax PSU
Sound Blaster X-Fi™ XtremeMusic sound card
2 SATA 500BG WD Caviar

same problem, same mb...anybody ????