Go here for chipset driver: (chosse #3)
http://downloadcenter.intel.com/conf...Name=&lang=eng
Go here for Audio driver:
http://support.dell.com/support/down...&fileid=235761
Heres the list of drivers for the pc:
http://support.dell.com/support/down...&catid=&impid=
1. install chipset driver
2. reboot pc
3. install the audio driver
4. reboot pc