My brother-in-law switched on his PC after it not being used for a while and nothing happened - no noises, no lights on base unit, nothing appeared on screen, complete silence. Being the helpful sort I am, I said no problem, I'll fix it. Looked on the internet for advice and came to conclusion that the power supply had failed so I bought a new one. Fitted the new supply and nothing happened again! I have an old P3 PC that still works OK so I swopped its power suplly with both the 'broken' one and the new one and guess what, they both worked fine!! So, where do I go from here? Any suggestions would be appreciated! PC has a MS6534 motherboard in it so its around 4 years old.
Electronics do not like to be stood, the connectors get tarnish on them. I would first try this Remove All Drive Ribbon cables Check to see if it will boot to DOS. You can just hold the button in to turn it off it cannot do any harm.
Tried all of these - no luck. Even removed motherboard, removed cards and tried to power it up then, still nothing. I'll keep trying other options as I find them on the internet and post back the outcome!