pc won't turn on help please.

chardonnay_2

hi, i wonder if you can help me. it was working fine then just switched itself off and had a slight burning smell coming from where the power cable plugs into the pc. got a new motherboard yesterday but pc still not working, just won't power up. we've tried different power cables. changed the power supply, tested the old power supply in another pc and it's working fine, changed the motherboard and swapped the processor with one from another pc. is there anything else we can try? medion akoya p7360 d (MD 8855) thanks

JJ_Egan

Any noise from psu or fans any lights on .
Video card is one possible .

chardonnay_2

no noise lights, anything I'm afraid.

macman

Unplug all components, then reconnect one by one. Something is causing it to fail POST. Tried the RAM?
However if it doesn't even begin to boot. then the PSU must still be the main suspect: it could be outputting at a voltage variance that the other PC will accept, but yours won't.

chardonnay_2

Thanks, slightly different problem now. It is powering up, lights and noise but can't find the monitor, just says no signal arggh!

JJ_Egan

Test the video card in another pc but first clean the contacts and reseat it .

chardonnay_2

It has a brand new motherboard so should it not turn on even with just the onboard graphics?

chardonnay_2

Hubby is going to reinstate graphic card tomorrow just in case