22 Setup and Quick Reference Guid ew w w . d e l l . c o m | s u p p o r t . d e l l . c o m Restoring the Computer to an Earlier Operating StateNOTICE: Before you restore the computer to an earlier operating state, saveand close all open files and close all open programs. Do not alter, open, ordelete any files or programs until the system restoration is complete.1 Click the Start button, point to All Programs→ Accessories→ SystemTools, and then click System Restore.2 Ensure that Restore my computer to an earlier time is selected, andthen click Next.3 Click a calendar date to which you want to restore your computer.The Select a Restore Point screen provides a calendar that allows youto see and select restore points. All calendar dates with availablerestore points appear in bold.4 Select a restore point and click Next.If a calendar date has only one restore point, then that restore point isautomatically selected. If two or more restore points are available, clickthe restore point that you prefer.5 Click Next.The Restoration Complete screen appears after System Restorefinishes collecting data, and then the computer automatically restarts.6 After the computer restarts, click OK.To change the restore point, you can either repeat the steps using adifferent restore point, or you can undo the restoration.Using the Last Known Good Configuration in Windows 20001 Restart your computer and press when the message Pleaseselect the operating system to start appears.2 Highlight Last Known Good Setting, press , press , andthen select your operating system when prompted.