This can be a computer user’s worst nightmare. You hit the power button and nothing happens. Any number of things can cause this computer problem — it may be something as simple as a loose cord, or as serious as a dead power supply or a faulty motherboard.
Another common PC problem is when the computer turns on and the fan and lights come on, but the machine doesn’t boot, or shows a blank screen. This could be anything from a dead (or unplugged) monitor to a dead hard drive or corrupted boot sector.
Fixing the above issues sometimes could just be plain and simple old common sense which is to to simply check and make sure that all connections are properly done, (sounds weired?) I’ve been called out to hardware support jobs only to find out that a wall socket was not turned on so as much as possible make sure all connections are checked before proceeding to call support or arrive at dreadful conclusions.
So what do you do?