Lenovo G550- Screen goes black

After approximately 1 minute, regardless of whether the computer is plugged in or running on battery, the computer screen goes black. I've messed with the power settings, putting them on balanced as one thing I read suggeested that. I tried to adjust the display time, the blacklight and the image sensor or whatever it's called. Nothing has seemed to help or change it. Any advice of other things I may not have thought of? I think I've gone into every obvious option in the control panel and display settings.

 

Have you tried a Linux boot disc, the rules out drivers.

If you get display you may just need to reinstall display drivers.

Does it also display to an external monitor?

 

Theres been a lot written about this,,,some say it the backlight,,others say it the graphics chipset,some say its the inverter,some say the screen,some say its the power chip getting hot,me I think its the hardware that plugs into the screen, typically its behind the screen on the top left,,put into a shop and get a diagnosis with estimate to repair,,,,then repair or hello new laptop,,,,,,,,,unless you a warranty,,then send it in , rma time.

Cheers
3Fees

 

where do I find/get a linux boot disk? I don't have an external monitor that I've ever hooked this computer up to.