Hello, When i leave my system idle, after about 10 - 20min i get the beautiful BSOD. I have tried everything i know to fix the problem and have listed them below. The system never Blue screens when i am using the PC and i can run high spec games for hours with no problems. Little edit... System also BSOD when watching Videos.... aslong as keyboard & Mouse not touched. - OS reinstall - Latest drivers off Asus Support - Except NVIDIA, as Asus are about 6months out of date, but i have tested with Asus driver and it still BSOD. - Roled back after windows update - RAM test - passed - HD test - passed - Chdsk - Turned system sleep, hibernate & HD shutdown OFF - Good old slap! The only thing i cannot do is open her up as she is still under warranty. I did think that my HD could have been set as SLAVE, it has been in for a Motherboard repair recently and tech could have messed up. But wanted to see if there were any other suggestions before i send it off again. Have attached a .txt with hardware info aswell as two .dmp files. Thanks for any help Tommy One more update... quite often when it BSOD's the dump fails & sometimes when it restarts it says that there is no bootable device. If i reset works fine afterwards.