What to do if the DVD drive cannot be used in Windows 7 system

What should I do if the DVD drive cannot be used in Windows 7 system? The win7 system is an older version of the Windows system, so it is also equipped with a DVD drive recognition function. In the win7 system, we can use the DVD optical drive to read the disc, but some friends find that their DVD optical drive cannot be used normally. This is actually caused by the recognition problem of the wi7 system. So, what should we do? How to solve this problem? Below, the editor will show you the win7 system DVD drive cannot be used solution.

win7 system DVD drive cannot be used solution

First method: modify the registry

1. Start -> Run -> regedit ->Open the Registry Editor and expand:

HKEY_LOCAL_MACHINE/SYSTEM/Current ControlSet/Control/Class/{4D36E965-E325-11CE-BFC1-08002BE10318}

2. Delete the Upperfilter item and Lowerfilter item in the right box and restart the computer.

Please note: Deleting the above two values ​​may result in the loss of certain functions, such as the CD recording program. If this happens, the affected program must be reinstalled. If the problem is not resolved, you may need to contact the program provider to see if an updated version is available.

Second method: command line method

1. Click "Start -> All Programs -> Accessories", right-click the command prompt and "Run as administrator".

2. Paste the following command after the cursor in the command prompt and press Enter:

Rewrite this sentence, the original sentence is as follows: Rewritten sentence: Execute the bcdedit command and set the load option to DDISABLE_INTEGRITY_CHECKS

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