Processor : Quad Core Q6600 @2.4 GHz
Graphics Card : Asus Nvidia GeForce 1GB GT 610 Silent Graphics Card (fitted in August 2013)
PSU : Corsair HX620W http://www.corsair.com/en/hx620w.html
OS : Windows XP Pro SP3
More information on my PC before the graphics card was replaced :
Piriform Speccy information on my PC June 2013
SpeedFan results July 2013
CPUID HW Monitor results July 2013
My PC has always been plugged into a surge-protected multi-socket extension lead. The multi-socket extension is usually turned off at the wall socket when the computer is not in use.
When I turned on the extension socket this evening, it caused all electrical appliances to go off; the "main ring" switch in the fusebox/consumer unit had switched itself off.
I turned off the multi-socket extension at the wall socket, then pushed the "main ring" switch back on at the fusebox; other electrical appliances came back on without any problems. I switched on the surge-protected multi-socket extension and other PC devices turned on :- a subwoofer speaker and an external drive. I pushed the power button on the computer. It came on for a split-second and turned off. I checked the PC cable connection and pushed the power button again, but after several attempts the PC wouldn't turn on. I replaced the 13 amp fuse in my computer's 240v plug and tried again but it didn't work. I plugged the PC directly into the wall socket but it wouldn't turn on.
To test the PC's plug and lead, I used the PC plug (very briefly) with my monitor; the monitor turned on and switched to standby (as it would do usually). Other devices still work on the multi-extension socket and the wall sockets.
Do you think my PC's power supply unit is finished? Could it be something more serious inside my PC? Unfortunately I don't have a spare PSU for testing.
Thanks very much for reading and I appreciate any help you can give to me.