Dell Precision T5400 (Late 2007) - Manual (Page 145)

Reinstalling Software 145
1 Click Start→ All Programs→ Accessories→ System Tools→ System
Restore.
2 Click either Restore my computer to an earlier time or Create a restore
point.
3 Click Next and follow the remaining on-screen prompts.
Windows Vista:
1 Click Start .
2 In the Start Search box, type System Restore and press <Enter>.
NOTE: The User Account Control window may appear. If you are an
administrator on the computer, click Continue; otherwise, contact your
administrator to continue the desired action.
3 Click Next and follow the remaining prompts on the screen.
In the event that System Restore did not resolve the issue, you may undo the
last system restore.
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.
Windows XP:
1 Click Start→ All Programs→ Accessories→ System Tools→ System
Restore.
2 Click Undo my last restoration and click Next.
Windows Vista:
1 Click Start .
2 In the Start Search box, type System Restore and press <Enter>.
3 Click Undo my last restoration and click Next.
Enabling System Restore
NOTE: Windows Vista does not disable System Restore; regardless of low disk
space. Therefore, the steps below apply only to Windows XP.
If you reinstall Windows XP with less than 200 MB of free hard-disk space
available, System Restore is automatically disabled.