Why is cd rom not recognized

Logout Logout of your account. Twitter Facebook Google Plus Linked in This article is for informational purposes only and no longer being updated by Seagate. Users may have to reverse the roles or separate the devices on different interface ports or controller cards. Some Third Party Software Utilities have the ability to "hide" drive letters. Reference Third Party Software documentation for associated issues and troubleshooting tips.

Drive letter assignment is dynamic, meaning DOS hands out its drive letters on-the-fly each time it boots. Devices that are set up via the system BIOS Interrupt 13 have the highest priority and get letters assigned first.

That is why the bootable floppy drive is A:, the non-bootable floppy drive is B:, the bootable primary partition on the first hard drive is C:, and the non-bootable primary partition on the slave ATA hard drive is D:.

If a DOS primary partition type is found, it will receive the next available drive letter, which is E: in our case. When all the DOS primary partition types are found, each of the hard drives is checked for extended partitions, which could be divided into several logical drive divisions.

System updates may cause compatibility issues with your pre-installed drivers, firmware, and BIOS settings. Your CD drive might come with a free utility that lets it do firmware updates automatically. BIOS updates can fix many issues but should be done carefully. Incorrectly changing BIOS setting may cause permanent damage to your computer. Here is how to change them:.

Drivers are software packages used by Windows to interact with your hardware, and outdated CD drivers can cause compatibility issues between your disc drive and Windows.

Drivers can be updated automatically or it can be done manually with the following steps:. If a driver update fails to get your CD drive reading, you might try doing a fresh install of the CD driver. The Windows operating system includes basic drivers and will attempt to reinstall the driver after you reboot the system.

If nothing seems to work, try rolling back your driver to a time they were reading discs ok. Windows lets you roll back drivers individually. The process is simple:. An unknown update or change may cause your CD driver issues. Under Performance by File System , verify it says 'bit'. If you have recently installed or moved your computer, verify that the CD-ROM cables are connected correctly. If the disc drive is not opening when you press the eject button, verify the CD-ROM power cable is firmly connected.

If you tried all the steps above and you're still encountering errors with reading discs in the CD-ROM drive, the drive is bad. Note If the disc drive is not opening when you press the eject button, verify the CD-ROM power cable is firmly connected. CD-ROM help and support.