OK. Click start and in the search area type: cmd
Right-click on the cmd search result you see at the top of the search
results and select Run as Administrator.
At the blinking prompt in the black window type the following commands, pressing Enter after each
netsh winsock reset
netsh int ipv4 reset
netsh int ipv6 reset
netsh int ip reset netshlog.txt
Close the black window.
Click start again and in the search area type: device manager and open the search result.
In Device Manager, expand the entry for Network Adapters.
Right-click on your wi-fi adapter and select Uninstall (don't delete driver software)
Once it's gone close everything and restart the laptop.
The wireless adapter will be re-installed at startup and your networking protocols reset.
Connect to wireless and see how long it lasts.