Computer Power Shuts Down

  cragulas 20:24 21 Nov 08

Still leaves the light on motherboard on.

The shutdown is random but normally happens in first 30 mins.

To get it restarted I have to remove power lead until motherboard light goes out & then reconnect & start.

It will run indefinitely with the ethernet cable disconnected!

I have done the following:-

Removed all front switches & reset switches.
Applied new paste to the CPU fan (in case of heat probs)
Cleaned the case inside.
I have reformatted the C drive & reloaded windows.

Apart from buying a new power supply I cant think of anything else- but why does it run when no ethernet connected?

This is a tricky one.

  recap 20:44 21 Nov 08

After all that you have tried, have you looked at the power options? These may have changed somehow?

  cragulas 21:00 21 Nov 08

Yeh- been trhough them. disabled anything thats auto shuts power down. Gone back to basics.

Just scratching my head now.

  recap 21:07 21 Nov 08

You could try disconnecting the NIC to see if this is causing the problem.

  recap 21:13 21 Nov 08

Sorry forget that suggestion as you would need the NIC to connect to the network. Have you tried reseating the NIC?

  rossgolf 21:19 21 Nov 08

tried using a different PSU?
what size is your PSU?

  cragulas 23:27 21 Nov 08

PSU is 400W been working fine for 3 years.

Havnt tried a new one yet as Im trying to exhaust all other possibilities before shelling out on one

  cragulas 23:29 21 Nov 08

Havnt got an NIC its onboard

  rossgolf 23:57 21 Nov 08

well, ive never had a PSU that has lasted 3 years,so that could be the cause of it.

  Fruit Bat /\0/\ 09:57 22 Nov 08

you must be very unlucky, I'm still using machines upto 20 years old with the same power supplies.

Tried disabling old on board / ethernet card and fitting another?

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