I am having a similar problem with a ga-71x motherboard. Keeps saying CMOS Checksum Error - Defaults loaded press F1 to continue or DEL to enter Setup.
Keyboard is dead at this point.... but works on my other computer.
I've tried:
1. New Battery
2. Different Powersupply
3. Changed RAM
4. Reset CMOS jumper
5. Changed CPU to another I know is working (both recognized)
6. Unplugged all devices and reseated them
7. Used only RAM, CPU, & Video
8. Changed AGP Video to PCI card
9. Used 3 dif Keyboards (PS2)
Everytime it boots it gives processor speed, counts memory, checks for hard drives then gives checksum error and freezes.
You cant enter BIOS to change anything because 3 different keyboards wont work and you cant push DEL key for setup.
System is froze as num lock & scroll lock will not light.
