hi,i have a philips freevent MT4100(well its a friends brought to be fixed) he changed the PSU before giving it to me,its 300w.when i turned the pc on all that happened was the PSU fired up but nothing else did,the fans on the motherboard and the chasis didnt budge,now when i start it up it does nothing,is it the power supply or something more sinister? plz help
ps on the back of the power pack is a red swithch for different power outputs,neither of the two change anything as far as powering up the pc goes