Have a Dell Notebook 7300 2 in 1 notebook computer that is still under 'warranty'. The screen, after being left alone for a few hours has horizontal lines running from top to bottom of the screen with the top 30% flickering. I called their 'customer support' and after talking to 2 different reps, get tied into running diagnostics and being asked if the problem is still there. After telling them 3 times that the issue is horizontal lines in the display, they ask, is it vertical or horizontal lines that you see? Nothing is resolved, they have my contact info, 'in case we get disconnected' - the disconnect, then never call back. DO NOT BUY DELL products unless you buy knowing they are disposable.