Pc switchoff on startup

  ukiri 23:54 10 Apr 05

My pc is switching off on startup just as the windows log on is about to appear.Bios screen passes ok,hd powers up ok then pc shuts down.I can boot from floppy with windows disk or from cd with knoppix and access the hd but cant boot from it.I`ve tried known spare powersupply and graphics card with no change,any ideas please.I`m running ME on a biostar mb ,1600 duron 512 ram

  AndySD 01:11 11 Apr 05
  ukiri 21:55 15 Apr 05

Thanks for trying andy ,had to reformat my windows drive >|-(

  p;3 22:13 15 Apr 05

still a problem ? and have you scanned for viruses and malaware, including trojans?

  quack 22:54 15 Apr 05

Check to make sure that your power on switch on the front of the case isn't sticking in. Had the same symtoms on one of my machines and that was the cause.

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