quote:
Originally posted by MeEtc
The old one also has a high pitched whine noise to it whenever it has power to it.
Sounds like a dying capacitor.
quote:
Originally posted by MeEtc
One difference with the new PSU is that the power light on the front of the case does not light with it.
Sure you connected all the cables? It also easy to stick the little LED connectors in backwards.
quote:
Originally posted by MeEtc
I finally managed to get the system to boot, and only does so randomly, maybe 10% of the time. It needs to have monitor, LAN and KB plugged in, and the psu needs to be switched on but not powered on for a few minutes before attempting to start the
So it starts with the new PSU, but not all the time? Then the PSU isn't the only problem. Sounds like some type of heating problem. Doesn't have to be the classic CPU overheating though, could also be another component on the motherboard wearing out as it warms up.
If you have enough spare parts you can try to isolate the problem.. Just unplugging all the cables on the motherboard and placing it all back making sure it it properly connected can do wonders too. Fixed my uncle's PC yesterday by doing exactly that
. Although his would
never POST which makes it a lot easier to troubleshoot.
/ 
