Though the driver
appears to be installed, I would still suggest you to install the driver provided by Dell. The wireless driver might have been updated automatically via Windows updates. Before installing the driver, I would suggest you to disable automatic driver updates and uninstall the driver. You may refer to article Here
Once the driver updates has been disabled you may remove the WiFi driver by following the steps below :
- Open Device Manager
- Right Click on Intel WiFi Link 5100 and click on Uninstall
- Check 'Delete the Driver software for this device' and click on OK.
- Click on Start -> Control Panel -> Program and Features -> Uninstall a Program or Program and Features
- Uninstall the Intel WiFi driver. Follow the on-screen instructions and restart the computer when prompted.
Upon restart you will see a Network Controller device under Other devices in Device Manager. You may update the Intel WiFi driver provided by Dell from Here
. Follow the onscreen instructions and restart the computer when prompted.
Hope this helps.