1. Not setup properly in CMOS.
2. Bad CD / DVD disc.
3. Jumpers not set properly.
4. Cables or other drive related issues.
5. Bad CD drive.
*Not setup properly in CMOS
If the CMOS setup is not properly setup the computer may ignore or not look at the CD-ROM / DVD as a bootable option. Verify in the CMOS that your settings are properly set to boot from the CD-ROM drive. Additional information and help with getting into CMOS setup can be found on document CH00192.
Generally, these settings will be under the boot options. I suggest that you setup first boot cd-rom/DVD or have your boot options setup similar to the below example. If all else fails make your CD-ROM or ATAPI CD-ROM the first bootable option.
1 - CD-ROM / DVD
2 - Hard Disk Drive
Then save your setup or press F10 for save shortcut key. computer will restart automatically. Insert the bootable cd/dvd while restarting and wait for the message (boot from cd rom)to appear then press any key to boot from Cd-rom/DVD.
Then you have booted from the Cd-rom/DVD.
*Bad CD / DVD disc
Verify either in the computer you are using or another computer that the CD / DVD is readable. It's possible that the CD / DVD is bad or not readable. If you determine the CD is getting errors when being read, try first cleaning the CD before looking for a replacement. Additional information about how to clean your CD disc and CD-ROM drive can be found on our cleaning page.
*Jumpers not set properly
Not all disc drives will boot properly if the jumpers are not set properly; verify that the CD-ROM / DVD drive has the jumpers set properly. We generally recommend that you have the CD-ROM set as master on the secondary controller. This rule also applies to portable computers.
*Cables or other drive related issues
Some computers today have multiple disc drives, e.g. a DVD drive and another CD / CD-RW drive. If your computer has multiple disc drives consider disconnecting one of the drives while trying to boot from the disc if you're encountering problems.
With some IDE / ATA disc drives if the drive is not connected as the the first drive (first connection on the cable) it can prevent the drive from properly booting. If you've never been able to boot from a CD or DVD with this computer consider checking to verify that the drive is the fist drive on the cable.
*Bad CD / DVD drive
Verify other CD / DVD discs work in the drive. If the drive is a bad drive it will be unable to boot from the disc because it cannot read from the disc.
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