Hi there, I'm hoping someone can help me. I've got a custom built Vista machine and I feel fairly confident that I look after it properly, but recently I've been having a few problems (intermittent "freezing" for a few seconds when my HD is power-cycled) and just now I've had the deaded BSoD. I thought it might be my RAM, so I ran MemTest for 14 hours straight... With zero errors! So that doesn't seem to be it. I've seen others being helped with their BSoD's here, and I'd love a pointer or two to help me narrow down what might be causing it. Extra information about the problem (from Vista): BCCode: 4e BCP1: 00000099 BCP2: 00026731 BCP3: 00000002 BCP4: 000266B5 OS Version: 6_0_6001 Service Pack: 1_0 Product: 768_1 Over the past three days I've had minidump files created because Windows hasn't shutdown properly... and I've no idea why. I do know that my machine has taken to not switching itself off after a shutdown, which is annoying. Anyways, today (27th) is the first day I've had a BSoD. It went by pretty quickly, but I think I saw "PRN LIST" or "LIST PRN", but I've no idea what that means. My minidumps can be accessed here: http://www.thunderpeel2001.com/minidumps/Mini062708-01.dmp - 27th June (BSoD!) http://www.thunderpeel2001.com/minidumps/Mini062608-01.dmp - 26th June http://www.thunderpeel2001.com/minidumps/Mini062508-01.dmp - 25th June http://www.thunderpeel2001.com/minidumps/Mini062508-02.dmp - 25th June Thanks for any help!