How to solve the boot situation of HP Shadow Wizard 2?

Setting method of HP Shadow Wizard series startup USB flash drive

1. Press F 10 to directly enter the BIOS after the computer is turned on.

2. After entering the BIOS, you can select it through the arrow keys and Enter key on the keyboard. After entering the BIOS, select the third item "System Settings" in the top menu bar, and select "Start Options" under "System Settings".

3. In the startup option, there is a "traditional mode" that is disabled by default. Change it to enable, and set "U disk /USB hard disk" under "Boot sequence in traditional mode" as the first one through the keyboard. Remember to press "F 10" to save and exit after modification.

Remember to plug in the USB flash drive before the computer restarts. After the computer restarts, you will be asked to Enter four numbers, and then press "Enter" to complete the changes. These four numbers are random. Enter numbers and enter them through the keyboard.

5. After entering, the Start Management interface will appear. After selecting the "USB hard disk" option, the computer will start from your USB flash drive.

The reason for this problem is:

The software in the computer is not compatible with the genuine WIN 10 software. It is also the reason why the computer screen is black. After the black screen, you can press the power button to force the shutdown, and then try restarting.

Check whether the power adapter can be electrified normally, check whether it reaches the rated voltage with a multimeter, and troubleshoot the adapter.

Use the monitor of the desktop to connect to the external display interface of the notebook. If the display is normal, the possibility of damage to the motherboard and graphics card is basically ruled out. If it is not normal, there is something wrong with the motherboard or graphics card. In addition, loose memory may also lead to a black screen when HP laptop is turned on.

If it's not the motherboard and graphics card, it's a common LCD screen failure. If something vaguely shows that the LCD screen and cable are not damaged, it may be that the backlight is not lit.

There are two reasons why the backlight can't be lit: the backlight lamp tube is burnt out or the high-voltage circuit driving the lamp tube is damaged. The working principle of high-voltage circuit board is to convert the low-voltage direct current provided by the main board into high-frequency high-voltage electricity through the switch circuit, and light the backlight lamp.

If the backlight doesn't turn on, just press the power button and you can put your ear on the screen border to listen carefully. If there is a hissing sound, it will be silent, probably because of the high-voltage circuit board. If you keep silent, it may be the light.