Specific methods are as follows:
exclamation point method processing device manager drive:
1, using Win + R Win7 operating system to open, open type regedit Registry Editor for Win7 System;
2. Locate the UpperFilters and LowerFilters in HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E965-E325-11CE-BFC1-08002BE10318};
3. Right-click on both, select Delete and exit the Registry Editor.
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