I bought my father in law a refurbed toshiba l775.
He says the screen goes black after extended use. I have not been able to make this happen even with extended torture tests. Everytime I get it ,second time, it runs fine. We have a language barrier but he is smart. Obviously, the cooling down period must help but I'm kinda of lost on what this could be. All diagnostics were fine and ran burn in to try to break it but no luck. Any thoughts would be greatly appreciated.