You must determine if the problem is the media you are using (CD, DVD) or the drive itself. (CD/DVD Rom)
First see if the driver is installed for the CD/DVD ROM by Right clicking My Computer and choosing Properties, Hardware, Device Manager. Clikc the plus sign next to DVD/CD Rom Drives to see if there is a yellow exclamation point, or question mark. This means you need to install the correct driver. If there are no yellow exclamation marks or question marks your driver is installed properly.
Next try playing difffernt CD's to see if any of them work. Confirm they are good CD's by playing them on another device, then try them on your Compaq. If the Cd's play on another device you may possibly be experiencing read errors on the CD/DVD Rom drive. Try using a CD Laser Cleaner that will clean the laser head of the CD /DVD Rom. it looks like a CD with small brushes on the music side. This may solve a read error problem. if that does not solve your problem you may need to replace the CD/DVD Rom drive.
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
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