Locate the Advanced BIOS Features (Advanced BIOS parameter setting) press ENTER advanced BIOS Features (Advanced BIOS parameter settings) interface
The normal settings are:
The start boot Device is set to Hdd-o (hard drive boot)
Second boot Device set to CDROM (CD-ROM boot)
Third Boot Device set to Fioppy (floppy)
When the reload system is to boot from the optical drive, press the DEL BIOS setting to locate the boot Device and set it to CDROM (CD drive boot) by selecting the boot Device with the keyboard direction. Use PgUp or PgDn page to change Hdd-o to CDROM, press ESC, press F10, then press Y, enter, save exit.
Put the CD in the CD-ROM drive and reboot when the CD appears at the bottom of the interface ... Press any key in time, will be installed CD-ROM open, otherwise entered the hard drive started.
Remember that after the reload system is complete, use the above method to change the hard drive to boot sequence 1.