Question about HP Compaq DC7900 PC Desktop

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HP Compaq DC7900 CD/DVD problem - computer does not read them

HP Compaq DC7900 when installing a CD/DVD in the multi-player, it does not recognize anything is there, and I am not able to burn CD's as it again does not recognize a CD is installed.

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I guess the CD/DVD drive is not detected in my computer
Then you can follow the following steps:
CAUSE-It may happen due to some corrupted registry keys in the computer. We can follow the following steps to delete the upper and the lower filters.
1. Locate the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet
2. In some cases, there may be multiple ControlSets. You may see something similar to the following HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
3. Select either CurrentControl Set or the lowest numbered ControlSet, for example, in the second list above, ControlSet001, and do the following.
4. Locate the following key and highlight it in the left window of the Registry Editor. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
5. In the right window, you should see something similar to the list below. There may be some variation in the listed drivers for the upper and lower filters. For example, the upper filters may list a driver other that PWD_2K. You may also see only upper or only lower filters:
LowerFilters = CDRALW2K
UpperFilters = PWD_2K
6. Delete the upper and/or lower filters.
7. Exit the Registry Editor and restart the system.
NOTE: If the computer still does not recognize the drives, go back into the registry and repeat the above steps for editing the registry for each of the ControlSets listed on the system.
Hope it works for u
All The Best !!!!

Posted on May 11, 2010


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