I have a year old Acer Aspire M5640 when I try to turn on the PC the power button light turns on and off for about a second as do the fans turn on and off for a second and never turns back on. There are no beeps.
Thinking it was the Power Supply, I bought a new 450 Watt Power Supply. And the same thing occured.
Could the problem lie in the switch?
I had tested before purchasing the Power Supply with my Tower's PSU (Antec TruePower Trio 550 Watt), while connected to the case. I had to use the power switch on the Tower's case instead of the PC, but it turned on.