Compaq Presario Series Maintenance And Service Manual page 167

Problem Probable cause(s)
Cannot DVD or CD is not properly
read DVD seated in the drive.
disk
DVD or CD has been
loaded upside down.
DVD or CD disk may be
dirty or scratched.
DVD does Proper drivers are not
not work in loaded.
the DOS
mode.
Cannot The system is in the
eject DVD Sleep mode.
disk.
The DVD, diskette, or
hard drive was active
when attempting to eject
the DVD.
DVD disk is not properly
seated in the drive.
DVD drive DVD drive is not
devices are connected properly.
not
detected.
Incorrect driver is
installed.
Drive has been changed.
Proper drivers are not
loaded.
DVD drive
Possible solution
Eject the DVD or CD, press down on the DVD or
CD firmly to correctly seat it in the drive, then
reload.
Eject the disk, turn it over, then reload.
Load another DVD disk.
Restart the system and make sure the DVD
drive drivers are loaded.
Press the Power button to bring the system back
to full power, then eject the DVD.
Wait until all drive activity ends (the CD/hard
drive light and diskette drive light will go out),
then try to eject the DVD.
Turn off the computer, insert a straightened
paper clip into the emergency eject hole, then
push firmly. Slowly pull the tray out from the
drive until the tray is fully extended, then
remove the DVD disk.
Open the computer and check to see that the
drive cable is connected properly.
Ensure the correct driver is installed in
CONFIG.SYS.
Make sure the jumper setting is set for "Slave."
Restart the system and make sure the DVD
drive drivers are loaded.