If you don`t have your installation cd, move down the window that will ask for the cd and click Cancel first on windows verification window
Confirm that you want to cancel the operation
This method shows you how to verify Windows Xp Integrity using Command Prompt
Please perform the following steps: Please go to Start and choose Run ...
In the Command Prompt window please select, copy and paste the following command: sfc /scannow Please press Enter to execute Note: This command, depending of your operating system, will ask for windows installation cd.