Most of the computer has its Factory Restore to format the whole computer in case it attacking by virus or running slowly. It really works and after formatting computers usually speed up and run like a new one. However, sometimes it is fail to recover your computer. The most common reason is absence of factory-installed Dell Backup and Recovery Manager. It may just manually restore the factory image by Microsoft's ImageX utility but not truly restore you computer. At this moment, you can try following method if the automated Factory Restore procedure fails. The following tutorials is based on assuming you have a copy of imagex.exe and you still have a Dell Recovery process with a factory image on it. The factory image is in c:\Dell\Image\factory.wim.
Any user-installed programs and user data will be erased after Restoring the Factory Recovery. Therefore, it’s important to make sure you backup any user data documents, media including pictures, music, etc. and installation to reinstall user programs.
1. Before starting, you need to prepare a copy of the imagex.exe file to a USB flash drive. Insert the flash drive into a USB port on the computer. Turn on the computer and follow the first four steps here until you get to the System Recovery Options screen.
2. Now the picture of main System Recovery Options menu is showed. We will choose the "Command Prompt" option to perform the factory image restore. However, the essential to avoid overwriting the wrong partition is the ability to know which drive letters the Recovery Environment has dispensed to the Recovery partition, the OS partition, and the flash drive. The next few steps are to identify those drive letters. To check the drive letters, select the "System Image Recovery" option.
(Note: this option is for restoring images made with Microsoft Backup, so it won't find the Dell factory image. However, this is the only menu option that lets us explore the drive letter assignments.)
3. As anticipated, a Microsoft system image is not found. Click [Cancel] to close the alert window and continue.
4. Click [Next] to proceed to the next window.
5. Click the [Advanced..] button.
6. Click "Install a driver" to continue. (Note: we are not going to install a driver, but the other two options, "Search.." and "Cancel", will not let us continue.)