Good Afternoon
I work in a Retail store and we sold a couple of Dell Laptops a while ago, from the 3 that we sold 2 has already came back with the exact same problem.
While the laptop is running on power the laptops run 100% but when we switch over to battery power the laptop will randomly switch to a sort of black and white display with vertical lines over the screen, the laptop still responds 100% but it is very difficult to see anything on the screen.
I was on the phone with Dell Support for over an hour doing the dell diagnostics and all hardware tested 100% fine on both Power and Battery Power. The Dell support agent then went through the process of updating the graphics drivers on the machine with me and the issue was still not resolved. The Support agent then logged on to the laptop remotely and went through all the graphics settings and so on but still no progress. Then he suggested that I do a full Windows Reset on the machine which I did which after the machine still did the same thing.
Has anyone had this problem before? It only happens on battery power so I suspect that it is either the battery doesn't supply enough power to the screen or the graphics card.
Please advise
Kind Regards
Francois