Method 1 Discharge
After shutting down, unplug the power adapter, remove all external devices, press and hold the power button for 30 seconds and then release it, then plug in the power adapter and turn on the computer to observe.
The specific method is: first shut down the computer, unplug all external devices including the power adapter while it is shut down, and then press and hold the power button for about 30 seconds. After the operation is completed, just turn on the computer normally to release the static electricity in the notebook.
It may be that there is static electricity on clothes in winter, and the metal casing easily conducts static electricity, causing static electricity inside the notebook.
Method 2 BIOS hard reset:
In the shutdown state, press the Windows button + V button at the same time and keep it pressed. Press the power button to turn on the computer. Do not release Windows + V button. Wait ten minutes. If there is a display and a 502 error when booting, it means the reset is successful. Afterwards, if it turns out to be a UEFI booted system, you can enter the system directly.
Method 3
Update drivers for both graphics cards
Method 4
Depending on the specific model, update the motherboard BIOS.
Specific steps - you can succeed by trying one by one
In the past, type-c had no signal output due to not shutting down. Another time, type-c suddenly became useless due to a software upgrade. I tried to restart and enter safe mode, but nothing was solved.
Later, I contacted HP technicians on WeChat and the problem was solved. The process is now left so that we can find a solution in the future and provide it to netizens in need!
Problem: Nothing happens after the docking station is plugged in
. Solution:
- Make sure your type-c supports the functions you want;
Some computers' type-c only supports HDMI output and does not support VGA output.
- Make sure there is no problem with your docking station;
You can connect the docking station to a mobile phone with a type-c interface for testing.
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Make sure the device you want to link to is normal;
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Make sure the docking station is compatible with the computer;
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Test type-c interface;
Shut down the computer;
disconnect all connected peripherals, such as USB storage devices, external monitors, or printers;
unplug the power adapter from the computer;
on most laptops, press and hold the Power button for 30 seconds ] time;
insert the [power adapter] into the computer, but do not connect any peripheral devices;
press the [Power] button to start the computer.
This step is to discharge the computer to release static electricity. After completion, see if type-c can be used. If it cannot be used, check if there is a problem with the BIOS.
- Check BIOS;
Press and hold the [Windows] + [r] keys to enter [msinfo32] to view. If there is a problem with the BIOS, check it on Baidu; if there is no problem, you can reset the BIOS.
- Reset BIOS;
When completely shutting down and restarting, press [F10] (this may vary depending on the computer), enter the BIOS, press [F9] to select [Yes], click [Enter], then press [F10] to select [Yes] and press Enter to restart. Test whether type-c can be used.
- It can only be sent for repair.
The editor fixed it in step 7 the first time; and fixed it in step 5 the second time.