I see. Have you tried redownloading and installing the drivers yourself directly? It is possible something has removed them. It happens. Especially if in Windows 10 and it updates or you updated to Windows 10.
You may want to try starting up in "Safe Mode with Networking" and see if it will be fine from there. If it won't then it may well be hardware. If that is the case your WiFi card could be going and that can sometimes cause the system to remove the drivers. If that is the case, you would have to either replace the internal card, or get an external one.
However if it does work in "Safe Mode" (granted most programs and access won't but you can test your internet), then there may be something on the device that is interfering. Bad program, malware, virus, etc. You would then have to find and remove the problem items, reboot and see if it works fine.
How to enter "Safe Mode" when booting the computer.
In Windows 8 and 10...
As your computer restarts, press F8 (possibly a few times) to enter "Safe Mode"
a. Press the "F4" key to Enable "Safe Mode".
(The computer will then start in "Safe Mode" with a minimal set of drivers and services.)
b. Press the "F5" key to Enable "Safe Mode" with Networking.
( Once "Safe Mode" with Networking starts, Windows is in Safe Mode, with additional network and services for accessing the Internet and other computers on your network.)
c. Press the "F6" key to Enable "Safe Mode" with Command Prompt.
(In "Safe Mode" with "Command Prompt" starts Windows in Safe Mode, with a Command Prompt window instead of the Windows interface. This option is mostly only used by IT professionals.)
Now sign in to the computer with your account name and password. (If you have one set.) When you are finished troubleshooting, you can exit "Safe Mode" restarting your computer.
In Windows 7/Vista/XP...
1. Immediately after turning on the computer, or restarting it (usually after you hear your computer beep), tap the F8 key, repeatedly, in 1 second intervals.
2. The computer will then display hardware information and run a memory test.
3. Next the "Advanced Boot Options" menu will appear.
4. In the "Advanced Boot Options" menu use the arrow keys to select "Safe Mode" or "Safe Mode with Networking" and press ENTER.