|When I plug the computer (HP Pavilion) in the on switch light starts flashing continuously. |
This is before I even try to switch it on. In this state it doesn't respond to anything and can't be switched on so it's not even trying to go through a boot sequence. It just flashes at me.
Both fans in the casing are trying to turn but it's like someone is just switching everything on and off very quickly - except I'm not!!