I'am running Edgy Eft on AMD Athlon 3000+(Motherboard: gigabyte K8N), 1GB RAM, Samsung SATA - II 160 GB HDD. At least once a day, while I am using my computer, all of a sudden system freezes and stops whatever it is doing at the time. I can't move the mouse, can't play anything, can't fall back to terminal with any alt + F1-7 combinations. I reboot the computer and everything seems to be working fine until another freeze.

At one time I reboot the computer and had an "CMOS checksome error". Someone recommended to upgrade the BIOS, but I don't know how.

Can someone help?