[MadlyAlive]

I've tried the old reg hacks and it doesn't work...

HKCU\ControlPanel\Backlight\
At the bottom you'll see a key that says QKeyLedTimeOut
Modify that key and change the DWORD from 10 to whatever seconds you want.

HKCU\ControlPanel\Backlight\
Set auto sensor from 1 to 0