Win7 system does not recognize old DVD drive analysis

Source: Internet
Author: User

Method One: Open Registry Editor and navigate to [Hkey_local_machine/system/current controlset/control/class/{ 4D36E965-E325-11CE-BFC1-08002BE10318}] Item, remove the "UpperFilter" and "loweverfilter" items directly, and restart the computer.

Description: This method may cause some program dysfunction after deleting the two key values, such as a CD burning program that may not be available, and usually fixes the problem by reinstalling the latest version of the program.

Method Two: Open a command Prompt window with administrator privileges, enter the following command "Bcdedit/set loadoptions ddisable_integrity_checks" (excluding outside quotes), the execution can be resolved after successful.

Summary: The first method can be temporarily resolved, the author recommends that the first method of operation must first back up the registry to prevent unnecessary risks. The second approach is relatively easy to manipulate, and eliminates the risk of modifying the registry, and users may wish to try the second method.

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