Hi Ginger,
The drivers to be installed on the system after Operating System Reinstalling are listed below:
Intel Mobile Chipset Driver
Mobile Intel GMA X3100 Video Controller
NVIDIA Quadro NVS 135M Video Controller
O2Micro Cardbus/Smart Card Controller
Fingerprint Reader Driver
Broadcom NetXtreme 5755 Gigabit Integrated Network Controller
Wireless driver
IDT STAC 9205 Audio Driver
Dell Touch Pad Driver
Bluetooth driver and stack
You may install from the link: http://dell.to/Qp5IcL
Once you are on the website, insert system Service Tag and choose Windows, install the drivers.
Refer to the link for more information on how to install drivers: http://dell.to/UrnR9C
Hope this helps.
Thanks and Regards
Priyanka S