Hewlett-Packard notebook black screen problem is a common problem of HP notebooks, mostly caused by machine failures, and this type of problem does not have to panic. As long as careful detection and analysis will solve the problem, we will teach you how to deal with the problem of HP notebook black screens.

First, check the power adapter and motherboard

       1, HP notebook appears black screen problems, first look at whether the power adapter can be normally energized, if conditions permit, use a multimeter to check whether it can reach the rated voltage, in order to remove the adapter problems.

       2, then use HP laptop external display device, is the ordinary desktop display device, connected to the laptop external display interface, if it appears normal, fundamentally remove the motherboard and video card damage possible. If there is a problem with the motherboard or graphics card In addition, loose memory may also form a black screen on HP laptops.

       Second, troubleshooting LCD screen problems

       1, sweep unless the motherboard, graphics problems, is the common LCD screen problems. If there is something looming to clarify that the LCD screen and cable have not been damaged, it may be that the backlight does not light up.

       2. There are two reasons for the backlight not being lit: the backlight lamp burns or the high voltage circuit that drives the lamp is damaged. The working principle of the high-voltage circuit board is to convert the low-voltage direct current provided by the main board through a switch circuit into high-frequency high-voltage power, and light the backlight tube.

       3, the backlight can not be lit, then just press the boot button to start the ear, put the ear on the screen frame to listen, if there is a sizzle sound, then silent, generally is the problem of high-voltage circuit board, If you keep silent, it may be a lamp problem.

Xiaobian tips:

       Hewlett-Packard notebooks use a long time is prone to various problems, sometimes caused by the machine, and sometimes human-induced reasons, the machine has problems, it must be handled as soon as possible, dragged down may increase the damage to the notebook.