Some disk can be manufactured bad. Simply try another disc & check. If that too fails, then most probably the lens in the CD ROM has failed - better buy a new one.
Right-click on Drive A. You will see the option to format the drive.
Click on Format. Depending on your operating system, you will see an option that reads either "Create a system disk" or "Create a MS Dos system disk." Click the box next to this option.
Click the "Start" button to begin formatting the disk.
Open the software that you use to burn or write files to the CD-rom or DVD drive.
Click on "Make a Data CD or DVD." Insert a blank CD-R or DVD-R disk into the drive.
Look for the option to "Make this disk bootable." You may have to scroll over the various icons displayed to find this option. Click on the option.
Burn the CD or DVD as usual. Once completed, this disk can be used to boot your computer.
When completed, you will have a bootable floppy disk.
For CD Rom or DVD disks
hope this helps
Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders
HKEY_LOCAL_MACHINE
SYSTEM
CurrentControlSet
Control
Class
{4D36E965-E325-11CE-BFC1-08002BE10318}
This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.
Upper Filters
Lower Filters
Upper Filters.bak
Lower Filters.bak
If any of the above keys shown in step 4 are listed, right-click on them and choose Delete
After deleting the keys, close the registry editor
Reboot your computer
Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.
hope this helps you
If its cd-rom that is used in laptops (extremely thin) it should also work but you can always find a computer with one of these trays and then copy the contents.
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