Yesterday the puter started to smell like burning, i turn it off (as suggested in fury's sig ) I opened the case, started to track the smell, it wasn't any, i thought it was the monitor, no, speakers, no......nothing was wront. I even checked the wall plug and it was fine. So i turn on the PC again, and it starts to smell. I turn it off, and then i felt that the PSU was very hot. I removed it, opened it, and zero, nothing was wrong, so i decided to turn the puter on while the PSU was open, and then i noticed that the fan was not working properly, sometimes it stopped and when it spinned it was at about 100rpm or less. Today i bought a new PSU fan, put it on, and voila. The only bad thing is that this fan is very noisy.