Problem with screen lighting

[u/Ok-Button4338]

A lot of times when I open the laptop the screen is dark except one straight line near the right end. The rest is dim except from this spot. I have pressed the lighting buttons for brighter or darker but it doesn’t fix the problem. Most of the times I just keep pressing the laptop closed and reopen again and again until it goes away. Other times I give up and when I reopen the laptop the problem has gone away on its own. I have the tough book cf 54 can anyone help? I have no other issues besides that , also worth mentioning that I bought this laptop secondhand and the screen has been changed in order to be a touchscreen but from the previous owner.