The motherboard is an ASRock 4 core dual SATA-2, a crossover board I bought to keep my DDR1. Twice since running Windows 7 the PC has crashed to the bluescreen message 'BAD_POOL_DATA' and once to a blue screen with a loud humming sound but no message, over the course of a few days. But it seems this could be related to any number of changes I've made to my system over the last few days, searching suggests it might be a driver problem.
Presumably by checking 'deafult optimal settings' in the BIOS I caused the problem. I have tried setting the CAS frequency, and BUS size instead of leaving them on auto, changing the voltage, and setting the two sticks to run in single channel mode, still, it won't POST. I didn't want to mess around with the settings anymore until getting some suggestions, as I've only a pretty basic understanding of hardware and would like to be able to at least keep using one 2gb stick. I can't find any drivers from the ASRock site for windows 7 systems and this motherboard. This problem began before installing windows 7 so I guess that can be ruled out.
Any suggestions? Thanks then.
Edited by Dani723, 19 February 2010 - 01:07 PM.