What are the reasons for HP Shadow Elf 2 booting up with a black screen?

1. Software in the computer and genuine WIN10 incompatible software. It is also the cause of the black screen of the computer. After the black screen, you can press and hold down the power button to force the computer to shut down and reboot to try.

2. Check whether the power adapter can be energized normally, use a multimeter to check whether it reaches the rated voltage, so as to rule out the adapter failure.

3, with a desktop monitor, connected to the notebook external display interface, if the display is normal, basically ruled out the possibility of damage to the motherboard and graphics card. If it is not normal that the motherboard or graphics card has a problem. In addition, loose memory may also cause HP laptop boot black screen.　

4. If it is not the motherboard and graphics card problems, it is a common LCD screen failure. If you vaguely show a little something indicates that the LCD screen and wiring is also not damaged, it is possible that the backlight is not lit.　

5, the backlight can not light up two reasons: the backlight tube burned or drive the high voltage circuit of the lamp is damaged. The working principle of the high-voltage circuit board is to transform the low-voltage DC power provided by the motherboard into high-frequency high-voltage power through the switching circuit to light up the backlight tube.　

6., the backlight can not be lit, then you can just press the boot button to start the time to put your ear on the screen bezel listen carefully, if there is a nuisance sound ringing a little bit, and then no sound, roughly, is the problem of high-voltage circuit boards, if there has been no sound, then it may be a problem with the lamp.

Hewlett-Packard Shadow Wizard series set up boot USB flash drive boot method

1. After the computer is turned on, press F10 to directly enter the BIOS

2. After entering the BIOS, you can select the keyboard arrow keys and Enter key, in the BIOS after the top menu bar to select the third "system settings In the boot options, there is a "Legacy Mode" which is disabled by default, so change it to enable, and set the "USB flash drive/USB hard disk" under "Legacy Mode boot order" to the first one via keyboard. Remember to press "F10" to save and exit when you're done.

4. Remember to plug in the USB flash drive before the computer restarts, and after the computer restarts, you will be asked to enter four numbers and press "Enter" to complete the change, these four numbers are randomized, enter the numbers through the keyboard and Enter.

5. The "boot management" interface, select the "USB hard disk" option, the computer will start from your USB flash drive to boot.