For some time now my graphics card has been a bit dodgy. 1 out of 10 times it refused to start, and the monitor remained black. I point out the graphics card as the scape goat because the fan on the card was totally silent and not still - the card didn't seem to start. This went on for some time. About one week ago (christmas eve) the pc just wouldn't boot, all fans would start (including the one on the graphics card) but the monitor remained black, like it didn't get a signal. Because of my earlier experience with my graphics card I once again blamed it for being the source of error. I let the PC be, and didn't start to fiddle with it (being crhistmas and all). I tried to start my computer the day after and as a gift from santa himself it worked and started on first try! To avoid having further "bad surprises" I soon after decided to return the card to the shop where I bought it, not for being broken, but for fearing it would be sooner or later. The support team at the shop were a bit sceptic as I explained my worries to them. They gave me a hint though that i maybe had a bit too low power in my sýstem (350W), and that this might be the reason why my pc acted the way it did, and that it maybe only made it look like it was the graphics card. But they agreed on taking it in on a test anyway. Nothing wrong was found with the card according to them and I got it back yesterday and put it in again. It didn't work. I moved some stuff around. It didn't work. Unplugged this, plugged it in again, did this, did that. It didn't work. (I should maybe also mention that I took the advice given from the support at the shop and changed my SPU to a 420W instead before I put the card back in.) I read somewhere that with my motherboard you could check what was wrong by plugging in the headphones and listening for a voice message once it started. "System failed CPU test". It was not a happy suprise. The screen remained black - no signal, and this message kept playing. I kind of somehow still blamed the graphics card. Then I thought about taking the card out and lístening again, so I did. Still there. Hmm, can't be the card now, can it? Plugged out everything except the two power-cords to the MOBO and the CPU and CPU fan. The message was stil there. This is driving me nuts. What i want to know is. Can the new PSU somehow have damaged the CPU? Too much power or something? Maybe it's a bit too far-fetched, I don't know. Or is there any other source of error you can think of? Here's my specs: AMD Athlon 64 3200+ 2x HDD 1x CD-ROM, 1x DVD-ROM ASUS A8V-E Deluxe Club3d 6800 GT (nVidia) 512+256 MB RAM, DDR I'm very thankful for all help I can get! And please ask me if something is a bit unclear or if I kept relevant information out (I'm aware of that i made this maybe a bit too long :blush: ) Cheers!