CD-ROM, DVD, or other disc tray not opening
Locking device or software installed
First, verify no locking software is installed that prevents the tray from opening. If you are unsure, reboot the computer and as it is booting up, eject the tray. If the tray can eject as it is booting, but stops working after loading your operating system, something is being loaded that is preventing the drive tray from opening. Programs used to burn CDs are a common culprit.
Bad eject button
If you are running Microsoft Windows, open My computer, right-click the disc drive icon and choose the option to eject. If this ejects your CD-ROM drive tray, the button on the disc drive is defective, and it is recommended that the drive be replaced.
No power to computer or disc drive
If you have recently installed a new optical drive or you have moved the computer, the power cable to the CD-ROM may have become loose or disconnected. Reseat the power cable to make sure this is not the problem.
CD stuck within drive
If you suspect that a CD may be stuck within the drive, the tray needs to be ejected manually. Look for the small manual eject hole (not the head phone jack) located on the front of the drive. Unwind a paper clip and place one end of the paper clip into the hole to eject the CD-ROM tray. You may need to apply some pressure to activate the manual tray ejection.
If CD-ROM tray opens part of the way, pull it gently to see if you can get it to open fully. If it cannot be opened any further, it is likely that the gears within the CD-ROM drive have become damaged or dislodged. But usually, a stuck CD is blocking the way.
Caution: If you can open the CD-ROM drive using a paper clip, we do not recommend continuing to do so. This is meant to be used as a temporary solution and we recommend that you replace the drive.
If you have an IBM compatible computer, recently installed the CD-ROM drive and are unable to open the it, you may have a compatibility issue. Temporarily disconnect the IDE or SATA cable to verify that you are not experiencing incompatibility between the CD-ROM drive and motherboard. Once the IDE or SATA cable has been disconnected, power on the computer and see if the CD-ROM drive tray can be opened.
If the drive can be opened with the IDE or SATA cable disconnected, you should first try a different IDE or SATA cable to see if the issue is resolved with a different cable. For older computers and CD-ROM drives, if the drive included an interface card, use the interface card to see if the issue is resolved. You can also try connecting the CD-ROM drive to the ATAPI interface on the sound card or motherboard, if available.
If after following the previous recommendations you are unable to open the CD-ROM drive using the button on the front, it is likely defective and should be replaced. It is not worth trying to repair a defective CD-ROM drive.