How to solve the problem of laptop boot does not display

Laptop boot is normal, that is, the monitor does not display, also does not light, this is how to go about it?

If your notebook is turned on, do not show, you shake the screen with your hand, if it is displayed, it is possible that there is a problem with the screen line, contact is not good. But if the shaking also did not respond, that is the video card has a problem, is generally the graphics card power shortage, the main reason is the use of notebook time too long, old, the replacement parts.

In fact, a notebook general life is about 4 years, the use of a long time, what is slow, after all, the electronic product replacement is too fast.

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