Dell Inspiron 15 (1564, Early 2010) - Manual (Page 59)

57
Restoring Your Operating System
To undo the last System Restore:
NOTE: 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.
Click 1. Start .
Click 2. All Programs → Accessories→ System
Tools → System Restore.
NOTE: The User Account Control window
may appear. If you are an administrator on
the computer, click Continue; otherwise,
contact your administrator to continue.
Click 3. Undo System Restore and click Next.
Review your choices, and then click 4. Finish.
Your computer will restart and display
a confirmation that the undo process is
completed.