Install the following... (use another computer to download these and save onto a USB flash drive)

BIOS A10:

http://downloads.dell.com/bios/1420_A10.EXE

See notes on updating the BIOS:

http://dellwindowsreinstallationguide.com/updating-the-bios/

Patch your system using the WSUS Offline Update:

http://dellwindowsreinstallationguide.com/wsus-offline-update/

Check the drivers extract and install and not only extract...

Next install Dell System software:

http://downloads.dell.com/FOLDER88644M/9/Dell_System-Software_A06_R282536.exe

Intel Chipset

https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22153

Ricoh Card Reader:

http://downloads.dell.com/chipset/R141246.EXE

Intel Matrix Storage Manager:

http://downloads.dell.com/FOLDER90656M/1/R167146.EXE

Modem Driver + Diagnostics + Utility:

http://downloads.dell.com/comm/R150152.exe

http://downloads.dell.com/comm/R147130.EXE

http://downloads.dell.com/comm/R148605.exe

Ethernet Driver + Diagnostics:

http://downloads.dell.com/network/R155246.EXE

http://downloads.dell.com/network/R151336.EXE

Audio:

http://downloads.dell.com/audio/R171786.exe

Webcam Driver:

http://downloads.dell.com/input/R165804.exe

Touchpad Driver:

http://downloads.dell.com/input/R165804.exe

Dell Quickset:

http://downloads.dell.com/FOLDER94231M/1/R180762.exe

There are variants in your systems display adapters and network controllers, please provide the hardware IDs for these devices and any unknown devices after installing the above:

http://dellwindowsreinstallationguide.com/downloading-drivers-checking-hardware-ids-and-downloading-and-installing-dell-system-drivers-in-the-correct-order/checking-hardware-ids-in-the-device-manager/