Press shift+F8 all the time to enter the safe mode, uninstall all drivers, including the motherboard, and finally scan for hardware changes and restart.
Other solutions:
Reinstall the system: Please refer to:/
One-click recovery reference:
/Lenovo/WSI/html s/detail _ 20 130 12 1 17 18 1 16 16 . html
If it can't be solved, please go to the nearby service station for repair.
The following is the inquiry link provided by Lenovo service hotline for you:
Hotline enquiry:
/lenovo/wsi/contact.html？ intcmp=thinkbd
The following are the query links provided by Lenovo service outlets:
Service station address inquiry:
/Lenovo/WSI/station/service station/default . aspx？ intcmp=thinkbd
For more questions, please consult Lenovo Intelligent Robot:
/lenovo/？ Channel = Wenba
If you don't solve your problem, you can spit out your valuable opinions and then ask for manual service.
I look forward to your satisfactory evaluation, thank you for your support to Lenovo, and wish you a happy life!