download the latest driver to your desktop: http://www.dell.com/support/drivers/us/en/04/driverdetails?driverid=R1 02523
and then:
1.Double-click the new icon on the desktop labeled 922ENA04.exe.
2.The Self-Extracting window appears and prompts you to extract or
unzip to C:\DELL922. Write down this path so the executable (I.e.
Setup.exe) file can be found later.
3.The Self-Extractor window appears.
4.Click OK.
5.After completing the file extraction, if the Self-Extractor
window is still open, close it.
6.Click the Start button and then click Run.
7.Type C:\DELL922 in the Open textbox and then click OK.
8.Follow the on-screen installation instructions.