I too am having the 100000d1 error message. This is on 4 new HP PCs. 3 of them purchased/setup last week have SP3 installed 1 of them purchased/setup last month has SP2 installed Memory checked out okay on all 4. I have been experimenting on the SP2 machine all morning and tried driver verification tool. Driver tool failed once with generic 0x000000C4, so I removed SAV and tried again with no errors. I tried analyzing the minidump files on this machine but they don't tell me much, so I'm not sure if I am viewing them properly. Can someone please look at the minidumps and tell me what you think? I am moving to one of the SP3 machines now to get those minidumps as well. Thanks!