How to do DELL PC Restore in Windows 7, Windows Vista, Windows XP
Caution:- TO DO LIST Before you do Launch DELL PC Restore
Step 1: Backup important files & data.
By performing a Manual Reinstall, make sure that you have backed up all DATA (Documents, Picture, Music etc) from all the user account / HDD. Because once you start with
the Manual Reinstall you wont be able to gett you DATA back on your computer.
Step 2: Remove non-essential peripherals
Except for the monitor, keyboard, and mouse, remove all external peripherals including:
Scanner
Printer
Modem or Network cables
Personal Digital Assistant (PDA)
USB flash drive or other external Hard Drive
Any other external devices (e.g., USB-attached devices)
Remove the computer from the docking station, if you are using one.
Step 3: Restore the computer's software to original condition.
Step 4: Restore your personal files and data from backups.
For Detailed information please refer to the below mentioned link
Windows 7 Manual Reinstall (support.dell.com)
Windows Vista (support.dell.com)
Windows XP (support.dell.com)