i.e. NOTHING POWERS UP WHEN YOU HIT THE ON SWITCH : - no fans, no lights, NOTHING !!
For people who have this problem, this is something I have encountered more than once.
WHAT TO DO TO FIX IT ?
Disconnect ALL USB devices plugged into the machine, then try to power it up. In my case that works, because the reason my machine sometimes fails to power up, is because one or more USB devices have been plugged into a USB port other than the one they were plugged into when their drivers were installed.
So what I do is plug in ONE USB device, then if the machine won't power up, I plug the device into a diffferent USB port, and try to power up again. If it powers up then THAT USB device is in its proper port. If it doesn't power up, then I try plugging it into another different USB port, and keep trying different ports until it does power up, at which point THAT USB device is in its proper port.
Having done that, then I plugin the next USB device, and try to power up, and go on plugging the second USB device into different ports until the machine does power up. Then the same with the third USB device, ETC.
Edited by JHMcG, 10 September 2013 - 05:32 PM.