Try connecting an external monitor to the laptop and check if its display is OK.
If it is then you may have a hardware problem.
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It could be a loose video cable connection to the systemboard or a faulty LCD panel.
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It could be a loose video cable connection to the systemboard, a faulty video cable (trying pressing on the left hinge area to see if you can make the problem come and go) or a faulty LCD panel.
Here’s a link to the [https://topics-cdn.dell.com/pdf/alienware-15-laptop_service-manual_en-us.pdf|service manual] for the laptop.
Scroll to p.85 to view the necessary pre-requisite steps and then the procedure to remove the display assembly.
This should give you access to view the cable connection first.
Hi,
Try connecting an external monitor to the laptop and check if its display is OK.
If it is then you may have a hardware problem.
It could be a loose video cable connection to the systemboard or a faulty LCD panel.
Here’s a link to the [https://topics-cdn.dell.com/pdf/alienware-15-laptop_service-manual_en-us.pdf|service manual} for the laptop.
Scroll to p.85 to view the necessary pre-requisite steps and then the procedure to remove the display assembly.
This should give you access to view the cable connection first.