computer won't start wife turned it of at mains

HQHZ

Reputable
May 8, 2014
2
0
4,510
My computer won't start since my wife turn it off at the power point I tested the power supply all amp readings are correct ,Green led on the MB lights up
11/05/14 Since the last time I have ruled out the power supply and the start switch looks like it could be the mother board
any suggestions on how to test mother board