I have a computer with following specification and was working fine after re-installing the system and refitting sink fan unit.
Recently it shuts down automatically after a few seconds. I checked PSU by shorting pin no.s 13 & 14 as well as 14 & 15. It worked well means the PSU fan moves. But I never checked the voltages at different wires.
I refitted the heat sink fan by applying thermal paste. but it behaved the same. Again I refitted the Heat Sink Fan, then it worked for 2 minutes and again shut down.
Now it shuts down immediately after switching on.
Mother board : M26GTM-3VP
CPU : AMD athlon
PSU : 450 watt
Can anyone help?