HP ProBook 5220m Notebook PC - Manual (Page 126)

NOTE: This process takes several minutes. Before rebooting, make sure you have changed the legacy
boot order in the F10 utility so that the USB CD-ROM drive is the first choice.
1. If possible, back up all personal files.
2. Restart the computer, and then insert the Windows 7 operating system DVD into the external optical
drive before the Windows operating system loads.
3. When prompted, press any keyboard key.
4. Follow the on-screen instructions.
5. Click Next.
6. Select Repair your computer.
7. Follow the on-screen instructions.
114 Chapter 12 Backup and recovery