Reinstalling Your Microsoft Windows Operating System - Dell OptiPlex 740 Guide De Référence Rapide

Undoing the Last System Restore
NOTICE:
Before you undo the last system restore, save and close all open files and
exit any open programs. Do not alter, open, or delete any files or programs until the
system restoration is complete.
1 Click the Start button, point to All Programs→ Accessories→ System
Tools, and then click System Restore.
2 Click Undo my last restoration and click Next.
3 Click Next.
The System Restore screen appears and the computer restarts.
4 After the computer restarts, click OK.
Enabling System Restore
If you reinstall Windows XP with less than 200 MB of free hard-disk space
available, System Restore is automatically disabled. To see if System Restore
is enabled:
1 Click the Start button and click Control Panel.
2 Click Performance and Maintenance.
3 Click System.
4 Click the System Restore tab.
5 Ensure that Turn off System Restore is unchecked.

Reinstalling Your Microsoft Windows Operating System

To reinstall your operating system, see the instructions in the following
section that corresponds to the operating system your computer is running.
Windows Vista
The reinstallation process can take 1 to 2 hours to complete. After you
reinstall the operating system, you must also reinstall the device drivers, virus
protection program, and other software.
1 Save and close any open files and exit any open programs.
2 Insert the Operating System media.
3 Click Exit if the Install Windows message appears.
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