Use Windows Key +R to get a Run box
In the Run box, type
%SystemRoot%\system32\restore\rstrui.exe
and then click OK.
On the Welcome to System Restore page, click Create a restore point, and then click Next .
On the Create a Restore Point page, type a name for the restore point and then click Create
After the restore point has been created, click Close.
Note If System Restore is turned off, you receive a message that asks whether you want to turn on System Restore now. Click Yes. Then, in the System Properties dialog box, click to clear the Turn off System Restore check box, click OK, and then repeat this step.