The error “Setup.rul “380″” Is caused by not having .NET 2.0 or higher installed. This is because the Software that controls the card is trying to be installed with the driver also. Installing only the driver will work as well.

In order to fix this issue without installing .NET 2.0 or higher please follow these directions. Also remember what the folder name is associated with the Wireless driver you downloaded. It will be RXXXXX.  In the case of a Vostro 1520 with Dell Wireless card 1397, the directory is R219313.

This is easily fixed by installing just the driver. Right click “My Computer” then click on “Manage” Then click on “Device Manager” Then right click on your wireless network card. You will then need to click on “Update Driver”. A box will pop up. Click on “No, not this time”. Now click “Next”. Now click on “Install from a list or specific location (Advanced)”. Now click on “Don’t search. I will choose the driver to install.” In the list select “Network Adapter” and click next. Now click on “Have Disk”. Now click on “Browse”. On the left side click on “My Computer”. Now go to “C:\Dell\Drivers\RXXXXX\”
NOTE: You may see that it has a lot of folders. Select the folder that’s best for your install of Windows. Then when you do this you will be left with one file to select. Select that file and click ok.

The system will then only install that driver. You won’t get the Dell Wireless software installed with it, so you should use the Microsoft interface to configure your wireless networks.  To enable the Dell Wireless software, install .NET 2.0 or higher and re-run the driver setup.