You'll need to download the install package from Dell, if you have an ethernet cable you can use it to download the package.
You'll need
7zip to extract the install package.
After extraction,
- open device manager and go to the device,
- right click the device and choose 'update drivers'
- Choose 'Browse my computer for driver software'
- Click 'browse' and select the extracted folder.
- Select the folder 'Drivers'
- Make sure the 'include subfolders' option is checked
- Click 'next' and wait until the drivers are installed.
- Reboot your system.