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Hello there! I am Charity. I'm glad to help you today!
May I ask if this started happening after the update?
Please reinstall your drivers from the official Lenovo website.
Your Bluetooth drivers here https://download.lenovo.com/consumer/mobiles/2gy50faf43j571c0.exe
Your Wi-Fi Drivers here
https://download.lenovo.com/consumer/mobiles/2gy50gafs8k061c0.exe
Please make sure to restart the computer after the installation of each drivers, then please test again.
Let's also check your services if the reinstallation didn't work:
Press Win + R, type
services.msc
press Enter.
In the list, find:
Bluetooth Support Service
Bluetooth Handsfree Service (if present)
Any Bluetooth User Service entries.
For each:
Right-click - Properties.
In Startup type, select Automatic.
Click Apply - OK.
If the service isn’t running, click Start before closing.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install.
Please let me know how it goes.
Kind Regards,
Charity
Please note that things might need more than one reply to completely resolve your issue, as it will completely depend on the complexity of the question and the amount of detail that you have provided me.