[BizzyB]

I have a rather old (2001) computer running Win XP that stopped working. I discovered that the power supply was most likely the problem. I bought a new ATX power supply but after I installed it the only thing that happened was all the fans turned on the power light and the floppy light came on and the hard drive activity status light is staying on steady (not blinking). The monitor never came on and the computer didn't post. When I took a closer look at the 20 pin power connector I noticed that there was an empty spot where a white wire was on my old power supply. I understans that this white wire is a -5 v. Is this missing wire the reason my PC won't post? And, if it is, is there anything I can do to get the proper voltage to it using this new PS? Thanks

[Neil Jones]

The missing pin on the PSU is normal.
It sounds like your motherboard is probably toast. If you can find another board that takes the same type of processor you can slot it and your memory in there to see whether the board or the processor is dead.