HP Compaq Presario,Presario 5116 Quick Start Manual page 92

After loading the Recovery CD, if you choose not to complete
any of the options, it will be necessary to restart your computer.
Perform the following steps to exit the Recovery CD:
1. From the Compaq Recovery CD Menu, select 5 (Exit) by
pressing the number 5 key on your keyboard.
2. The CD tray opens automatically, and you are prompted to
remove the Compaq Recovery CD. Remove the CD from the
CD-ROM, CD-RW, or DVD-ROM drive.
3. Press Enter to restart your computer.