Hello everyone, I'll write this in a rush because I don't know when my PC will crash again. Long story short, I have been getting a ton of BSODs with various messages and I have no clue how to diagnose the problem. I kindly ask you to help me out on this one. System : Dual core 2,4 GHz, 4 GB Ram DDR2, GEFORCE 9500GT/ATI RADEON 3450HD. I am running a Windows 7 64 bit copy. I am getting: -random BSOD, can't read it, the PC restarts instantly. -irql driver not less than equal -page fault in nonpaged area -UPDATED: system service exception Errors happen when I boot the system, when I shut in down or plain out of nowhere, 2 mins after I started Windows or sometimes 2 hours after starting. I have tried reinstalling windows - not working (duuh) I have tried replacing my 9500gt with my old 3450 hd - not working I have tried using only one of the two 2GB rams to see if one was corrupt + memory tests - not working Dskchk has reported and fixed some errors on my hard drive - did not get rid of the blue screen Here are some minidump files, the most recent since I reinstalled my OS. I don't know how to read them. Can you help me diagnose the problem please? Thank you for your time. UPDATE : A new dump file for then new BSOD is up.