Devices not working

[Otepman]

There are some times when I turn on my computer and nothing works, the CPU's lit up but the monitor, mouse and keyboard doesn't work. I had to switch the power ON and OFF until it works. I believe this is a hardware failure, please help. By the way I'm using Windows 7.

 

[Tmagic650]

"I had to switch the power ON and OFF until it works"...

The power supply may be dying

 

[Otepman]

No the computer is actually switched on, but doesn't detect the monitor, the mouse and keyboard does not work.

 

[Tmagic650]

The power supply could still be bad... Could be the motherboard, but power supplies are quicker and cheaper to replace