Open up the system event log, text version from that .cab file (use winrar to explode it) and do a find for memory.dmp. You have what, 8 I think, dumps in the past 7 days. That's a disaster. And they're all (or almost all) different. To me this is a hardware problem. If you'd mailed all the other minidumps I could be more sure, but that looks like a hardware issue. I saved alle the minidumps. I'll send them over. The date they happened is infront of the filename. 8 dumps, well, it's just like i told you. Starting up with a cold boot gives the problem. So that's about 8 days ago the problem started. According to the MS reply after reporting the problem it's most likely the following: - CPU - Power Supply - Memory - System board (To be sure we need more info..) ... so basically, what Bill & Co are saying is: we don't know, replace everything .... :)