Evidently there are two ways to re-install the system if F10 does not work
1. Click Start
2. Click Shutdown
3. The "Shut Down Windows" dialog box will be displayed
4. Select "Shut Down" from the menu
5. Start the system again.
6. When the Red Compaq logo appears press F8 repeatedly until prompted with the "Windows Startup Menu"
7. Select option 6 (Safemode Command Prompt) by pressing the down arrow key until Safe Mode Command Prompt is highlighted
8. Press Enter
9. At the C:\ prompt type D: and press Enter
10.At the D:\ prompt type CD CPQS and press Enter
11.At the D:\CPQS prompt type XQR press Enter
Method 2:
1. Click Start
2. Click Run
3. In the "Open" box type C:\CPQS\QUICKSR\FRESTORE.EXE
Performing these steps should resolve this issue and restore the computer to factory settings.
Don't forget to back up any data first as your drive will be wiped.