How to remove the old drive device in Windows 7

When we use Windows
7, some old or unused drive devices will always cause the system to crash. At this time, it is necessary to clean up the cumbersomeness of these systems. The following seven methods are used to solve the old drive device in Windows
7.

Some people don't care about the old drivers in Windows 7, but if you find that some recently installed devices are not working properly or often cause computers to crash, then you can consider it. Remove old or unused device drivers from Windows 7.

1. Right click on the Win7 desktop & ldquo; Computer & rdquo;, select “ Properties & rdquo;.

2. In the left panel, find "Advanced System Settings" and click on the "Environment Variable" at the bottom of the “Advanced” tab.

3. In the upper part of the user variable of "XX", click on "New" and enter the variable name: devmgr_show_nonpresent_devices

Input variable value: 1 Finally, click the <;OK” button.

Modify the registry

4. Right-click on the desktop & computer” select “Manage”, open on the left side <;Device Manager” .

5. In the top menu bar of Device Manager, select “View”——“Show hidden devices”.

6,so You can find "Other devices" on the right side of the device manager.

7, right click does not use "unknown device", uninstall it!