PC Not Switching On

This normally happens on mondays.  The new ATX power supplies in modern computers shut down with a power surge instead of blowing up.  The first thing to try is to pull out the power cable from the back of the tower for a minute to allow the power supply to reset. If that doesn’t work or if there is an expensive smoke smell, it is probably time for a new power supply. Be careful as other components might have blown and these can cause the new power supply to blow again. Strange faults can also happen after a power surge like USB not recognised.