Having problems with your HP Computer Cases ?

My computer screen has a vertical white line running from top to bottom


Answers :

If it's there all of the time, but you can still see your desktop and programs - chances are it's a monitor screen defect. Dell had this happen on some laptops and was replacing the defective flat panel screens. Borrow someone else's monitor or take it to a friends house that will let you hook it up to their computer monitor. If the problem goes away - then it's your monitor screen.
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