Since you've uninstalled the WiFi driver, try:
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Reinstall driver
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Restart computer, modem, and router
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Double check that there's not a WiFi switch that's off. I've seen physical switches and Fn buttons for this.
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Try to connect to WiFi
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Make a hotspot with your phone and try to connect to that
If it fails to connect to both WiFi and the hotspot, then it might be a driver, OS, or hardware problem. You could redownload the driver on another computer (or via Ethernet if you can connect that way) and try again. Similar for the OS, but I don't know Windows so seek specific advice for that. Hardware is easy. A WiFi adapter like this should work
Edit: Also make sure that your network is working correctly. Do other devices connect to the Wi-Fi? Turn your phone's data off and connect, then see if it loads anything. Could be the internet's out or the modem.