pc turing itself on??

geuben · 11 Jun 2006 at 21:22

my uncle has asked me to look at his pc, its an e-machines 390, 2.30ghz celeron 512mb DDR and "3D AGP intel extreme onboard graphics". the problem is, as soon as its plugged into the mains and switched on at the wall it boots up, also "no signal" appears on the monitor. any ideas people?

geuben · 11 Jun 2006 at 21:32

its not a dodgy power button, removed the button from the header on the motherboard and it still powers itself on, but if i remove the 20pin plug from the motherboard it doesnt. might try a different powersupply

geuben · 11 Jun 2006 at 21:59

i dont know if the pc is booting/posting or not, when i plug it in the power and hdd lights come on and the fans spin up, i unplugged the 20 pin connector to check if the powersupply fan span up automatically when plugged in. also have checked the monitor connection and used several monitors with it, havent had chance to try a different power supply as i couldnt find the old one i thought i had.

geuben · 11 Jun 2006 at 22:37

wake up on lan etc would require a network cable to be attached, the pc powers itself on a soon as the power lead is connected , with absolutly no periferals plugged in, so cant be if key pressed or something like that. i was only testing the powersupply to see if i was faulty (i.e would turn it self on when connected to the mains)