Win7 computer often crashes how to remove the old drive device that caused the crash

Some old or unused device drivers affect the Win7 system is still not small, often causing the computer to crash, or not function properly, then How to remove the old device drivers that run the dragging system?

Follow the steps below:

1. Right click on the Win7 desktop & ldquo; Computer & rdquo; ”.

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

3, in the upper part of the "XX user variable", click "ld"; New & rdquo;

Input variable name: devmgr_show_nonpresent_devices

Input variable value: 1

OK, OK, OK!

4, right click on the desktop & computer; & rdquo; select “ management & rdquo; open on the left & ldquo; device manager & rdquo ;

5. In the top menu bar of the 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 not to use "unknown device", uninstall it!