Dell XPS 15 L502X Screen Issue

Hello people,

I was wondering if someone could help me with an issue I have.

I have a Dell xps 15 l502x laptop running on windows 7 64 bit.

When the laptop restarts automatically after an update I find that the screen is on even when the lid is closed as I can see the light of the screen in the dark, this also happens when I click restart on the start menu and when I close the lid I can see that the screen light is still on and after restarting the screen remains on.

I have to open and then close the lid for the screen backlight to turn off. Normally I can open and close the lid and the screen will turn off every time so I don't see this as being a physical problem. This only seems to happen after it restarts automatically or If I restart it manually and close the lid straight away.

I have installed the latest bios and Nvidia drivers but still this hasn't fixed it.

Any help will be really appreciated.


Thanks