Macbook Pro 15 (early 2011) stops seeing wifi networks?

Question

WiFi

Good afternoon!
I have a Macbook Pro 15 laptop (early 2011) - after starting everything works fine, but after 20-30 minutes the wifi connection is lost and the laptop stops seeing any wifi networks at all, writes that wifi is disabled and back through the settings does not turn on. After the reboot, everything repeats from the beginning.

Answer 1

iMac 2010 stops seeing wired network.
USB-Ethernet removed the problem.
Maybe you can do it - USB-WiFi?

Answer 2

First of all, do a full reset of the connection settings: https://www.iphones.ru/iNotes/q/750343
Then try to diagnose if the problem persists.
Hold Option + mouse click on WiFi (in the menu bar), additional items will open in this submenu, find diagnostics there and run it. But most likely the wifi module has died, either look for a new one or find a USB wifi whistle, not a problem now.

Answer 3

Try deleting all files along the path (/Library/Preferences/SystemConfiguration/). First, make a COPY of ALL FILES!!!
This will reset all settings. If it does not help, then with the module something has already been written here.
If possible, throw in a known working one and monitor it.