I've got a Dell Precision 670 with an XC837 motherboard and BIOS at version A07. I'm trying to upgrade this from using a single-core Celeron to a dual-core Paxville processor.
When I install a single replacement CPU, the computer powers on (the CPU fan taking off like a jet engine immediately) but fails to do anything else; the three first (A, B, C) diagnostic lights are amber. According to the manual, this means that the BIOS is not executing, and that I should check the processor.
I don't know what the problem is. My research tells me that I've got the right motherboard and the right BIOS version. When slot the old processor back in, the computer boots up fine. Since I have two identical Paxvilles, I've tried inserting each, and they both result in the same lack of booting.
What am I doing wrong?
