This is my first post and I would like to say hi to everyone. I love Windows 7 and I have been using it since RC1. It is one of the best operating systems Microsoft has ever made. Unfortunately, a few weeks ago, I started noticing something peculiar. My PC would not shut down. Sometimes it would stay on for 20 minutes with the Shutting down message. I would have to hard reset or use the power button to shut windows down. Upon normal boot, I would have no meessage that the computer failed to shut down. If, however, the computer would shut down on its own, on the next boot, I will get a BlueScreen . I have the following system : If up until now I thought that the BSOD was showing up only on shutdown/boot several W7 installs proved me otherwise. I managed to get check the crash dump with WinDG and after running !analyse -v and !poll [the address] I still do not have sufficient information to find the culprit. I do believe something broke and that this is a hardware related issue because yesterday I installed W7 from scratch 5 times and 2/5 I got the blue screen and following reboot. Initially I thought it was my Netgear Atheros driver because it kept disabling my Realtek Gigabit LAN for some reason. I stayed up all night, can barely see the keyboard now, and I ran : 1. Memtest 2. Linx, Prime95 3. Furmark, 3DMark Vantage. Everything checks out. Nothing out of the ordinary . Any input would be greatly appreciated. I am at work atm, so I cannot attach the dump file. I will do so when I get home. Regards, Wishmaker.