For full detail of my problem, please see this For full detail of my problem, please see this thread. it's a lot to read, so, i'll sum it up. I've been having numerous stop errors, many different ones ever since I moved my machine to my new place. The first thing to happen, was that my power supply suddenly died...i was using it just last thursday, and went to power up my pc monday, and nothing happened. I'm using my old whisper series now. Upon booting, the system worked fine. After some time, I ran into a BSOD. And then later on, another. Many threads suggest random BSOD's are due to faulty ram. The XP4400's that I have(2x512) have worked flawlessly up until now, and even now, they passed 2 passes of memtest86(didn't have time for more) and an hour of HCI's memtest. No errors. But, still, BSODs. I bought both the cpu and memory at the same time, have been running them at stock speeds for a long time now. And they've been rock solid. it's all falling to poo now. When I attempt to load bf2, i get a BSOD, i'll be idling, BSOD, or a random one during a shutdown. My usb mouse, logitech G7 is acting up, as is my usb webcam. The mouse is lagging, the webcam is showing a black image. They both worked last night. My logitech keyboard(usb wireless) works fine...I'm using one stick of the xp4400 now, just to humor the guy in the abit forum, but, with only 512, I feel limited. Also, since the BSOD's are so random, as in, they've happened 2 minutes after I logged in, or sometimes 2 hours, I can't really test the ram as being an issue, because I don't have the time...I really don't know what to do... last night, just before I went to bed, i was introduced to a new stop code ending in 50. This is entertaining.