If your CD Rom drive will not open, there are a few possible causes. The drive might be dirty, the power might be off, the drive might be defective, or the computer’s motherboard might not be able to recognize the drive.

One of the easiest ways to clean a CD Rom drive is to use a can of compressed air. If the drive is off, turn it on and spray the air into the drive until it’s clean. If the drive is on, you can usually open the drive tray by pressing the eject button.

If the drive is off, …