This dell has two OS installed Windows and Linux. I thought it would be a routine LCD inverter replacement. Dim picture? Ok I have to replace the inverter. After install the inverter I start testing and boot it up everything is ok in Linux. Now this is a weird one. I did tried to boot up in Windows everything looks ok until it logs in Windows then goes dim. I did try many times same thing. It does it in exact precise time in the boot like it is a driver or a glitch in the next step of boot. What I noticed next thing I did plug in the external monitor and both lite up like they suppose to and works as well like there is no problem at all. Unplug external monitor dim again. Boots in Linus again no problem at all. I have never seen or heard of a problem like this. Could it be a driver? But it worked before the inverter failure.