Also, if your PC has an Ethernet adapter, try hardwiring directly into your router with an Ethernet cable. If it connects, then there's something up with the wireless connection on your PC: adapter/driver not installed correctly, wrong WiFi password, wrong settings for connection, etc.
If it doesn't connect, even when hardwired, then it's not the adapters, it's the settings on your PC. If that happens, try booting into Safe Mode with Networking. If you can connect that way (wirelessly or hardwired), then you've got malware interfering with the connections.