Hello everyone, I stumbled across your forum while researching an ongoing problem with my wife's laptop. The laptop is a HP dv1040us. About two weeks ago, I went to backup the files on the hard drive and plugged in an external Western Digital HD. Once while I was transferring files I got the dreaded BSOD. I restarted the computer and everything worked fine. (not sure if it is related, but everything worked fine before this point). Also tried restoring to the last know good configuration and still have problems. Now it seems like everyday I get an error message... (0x0000000A: IRQL_NOT_LESS_OR_EQUAL). I also get the following parameters... (0xFF1711F2,0x000000002,0x00000000,0x804D9B64) I have tested the memory with Memtest and everything checks out ok. I have also switched out the memory with some from another laptop and I still get the same problems. In addition, I have run ccleaner. I have searched the net, but keep coming up empty and don't know what else to do. I am attaching the last couple minidumps. Thank you in advance for your help and please let me know if you need any other information.