The only thing I would add to this would be that you should probably take a
close look at your BIOS settings. Most motherboards have a way of resetting
their parameters to their (conservative) factory defaults. If your
motherboard is set up to believe that it has 10ns memory when it really has
8
Considering your problems, it could be several things. I would first
check memory, either with an intensive hardware program like
Troubleshooter, or even swap RAM out (it's so cheap now anyway ). Are
your CPU, power supply, and case fans operating correctly? I've seen
things happen strangely wi