HI, I have an E-machine i turned it off normal way from start menu, but when i want turn it on there is no electricity, the power supply does not work anymore.i want replace it so am asking if any power supply will work? caus i tried 2 of my old pc but none worked.here is my pc informations. E-Machine : MODEL:W4682. Power supply :Model : ATX-250E-12V.REV7 Input :100-127V-6A. 200-240V-3A.60/50 Hz. Output:+12V 250W Max. so i want to ask what power supply will work for me so i can buy it ? and if the motherboard is still working ? how can i check it ? Any advise would be appreciated.Thank you.