Hardware issue:
If these problems mentioned above are not the case. You laptop might have hardware problems:
Loose or disconnected cable
Bad LCD power inverter.
Bad CCFL or backlight.
Bad LCD.
Laptop Overheating
Laptop is overheating sounds like one of the most common reason. Normally, laptop shuts off when it overheats, it may only shut off the display. Cause by the graphics chip shutting off.
Check to see if dust or dirt build-up on your fan, heat sink or vents. Get your laptop cleaned every 6 months is recommended
The power supply of a computer is a component that is often forgotten, but extremely important. If we often plug in all days and nights, they could be damage over time. Everything in your computer needs energy to run, and if it suddenly cuts off, and the power left in your battery is not enough to provide laptop.
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