So... I was sitting next to my computer doing random stuff and the suddenly I see my screen go into power saving mode (which it does when the computer has been shut down) and a short while later the computer shuts down. When I tried to start it back up again there was absolutely no response, not even a blink from the LED's. I opened it up and cleaned it and after that it seems when I turn the power on (at the PSU) the fans start spinning as if it's starting up, but the monitor stays black. I've tried two different monitors. The power button seems to be completely dead, when the power is on the fans will spin no matter what I do. In the beginning all the fans were only spinning for intervals of 15-20 seconds, in between that only the CPU fan would spin and at a rather low speed. Also, the HDD LED at the front keeps flashing as well as some random LEDs mounted on the outside of the box for show. I used it 15 minutes or so before the crash and did nothing special. The insides of the computer has basically not been touched for two to three years. The specs: CPU: AMD Athlon X2 3800+ Memory: Kingston 2x512 MB Motherboard: AsRock-something (it has a slot for the next generation AMD processors, it says) PSU: Hiper Type R 480W I'm only a novice with computers so I'm hoping you can help me out here! Since it just suddenly broke down, I'm guessing something must have just died in there, and I'm basically wondering what, so I can get a replacement. My theory (a novice's theory) is that the PSU is broken, since the LED's (also the ones that are just for show and are supposed to shine constantly) are flickering. But as I said, I'm just a novice, so I'd love to hear your ideas before I spend my savings on a new PSU! Also... There might have been a metallic voice/noise minutes before the computer broke down... not quite sure if it was though, or if it came from the computer. :S Anyway, any help would be immensely appreciated!