There are a number of things that can cause this, but the threshold question is: how technically literate are you with computers? Laptops are especially tough to troubleshoot because just opening the case can be a challenge. So ask yourself if you have the tools and experience to dig in here. And is there any valuable data on this unit that you'd not like to lose? If I had to guess, I'd say you should find a competent technician and be prepared to pay. This kind of work doesn't come cheap if you know what you are doing. You didn't specify what make or model you have, but you might contact the mfg's support center and inquire about authorized repair places in your area.
Answers & Comments
There are a number of things that can cause this, but the threshold question is: how technically literate are you with computers? Laptops are especially tough to troubleshoot because just opening the case can be a challenge. So ask yourself if you have the tools and experience to dig in here. And is there any valuable data on this unit that you'd not like to lose? If I had to guess, I'd say you should find a competent technician and be prepared to pay. This kind of work doesn't come cheap if you know what you are doing. You didn't specify what make or model you have, but you might contact the mfg's support center and inquire about authorized repair places in your area.