Fix USB driver problems under Windows 7

Due to the large number of different USB-storage mediathat over thewin7 logo Operating time connected to a computer, it can become sporadic Issues come with the driver installation. For every USB stick ever connected driver installed, even if they were only used once. In combination with the necessary USB drivers, such as those of a printer, these can be converted into tension devices. By creating a new environment variables In the future, unnecessary USB drivers can be displayed and easily removed.

The procedure for creating a new environment variable , as well as displaying old , unused USB drivers , is described in detail here.

Enter "Advanced system settings" into the search box of the Windows Start menu to open it.

1_Start Menu

In the window that then opens, highlight the Advanced tab and click the Environment Variables button in the lower section.

2_system properties

 


All system variables is added via the button New add a new variable.

3_environment variables

The name of the new variable should be Devmgr_show_nonpresent_devices and it should be assigned the value 1.

4_value_environment_variable

Clicking OK closes all windows . If you now open the Device Manager via the Control Panel , all previously installed USB drivers should be listed here.

5_Device manager

In Device Manager, you can enable the display of old USB drivers by going to View > Show hidden devices . These will be displayed with a gray background and can be easily removed . An example of this would be an old, unused USB modem whose driver is no longer needed.

6_Afterwards

This list can become very long if you frequently connect different USB sticks . To avoid conflicts with necessary USB drivers , the list should be checked and cleaned up from time to time.

 

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