Got this old wireless card along with the cpu from a good friend

After a few updates of window 10 suddenly its not working

read it from here https://driverfinderpro.com/driver-guide/install-a-driver-in-windows-compatibility-mode/

So i download the old driver from here https://static.tp-link.com/resources/software/TL-WN851ND_v1_110825.zip

After extraction right click the Setup 

choose Troubleshoot compatibility

then try recommended settings

click test the program...

then click next

viola all is done. Then restart your pc

Now your old wireless adapter works. Godsped!