6
I have a desktop PC which was recently moved. Since moving I've noticed that even while the PC is turned off (but wall socket turned on) the NumLock LED on the keyboard is on.
It may have been doing this before the move, but I've only noticed it now.
Maybe it matters that the keyboard is connected via a shared mouse/keyboard PS/2 port and I'm running Windows 7.
I've not checked whether the LEDs are just keeping whatever state they were in when I turned the PC off but will do this if that information could be relevant.
Why does the led stay on when the PC is turned off and how can I prevent this?
Have you removed all the other cables connected to the PC? Sometimes the power comes in from an external device such as a self-powered USB-Hub. – Robert – 2012-09-17T11:04:58.580
Nothing connected to the PC has its own power supply apart from the monitor. The socket on the wall and on the PSU are both on though. – George Duckett – 2012-09-17T11:07:34.207