text: what should i do if the computer is pluged in but does not turn on? the lights does not turn but its pluged in check off the obvious first - try a different socket,make sure all your swtiches are on and everything is properly connected. if its a laptop, sometimes the battery needs to be in for it to turn on, even if its plugged in. check the electricity isnt off, and that the fuse is ok. once these are checked, you can consider getting the computer checked out by someone with experience