How To Verify Unsigned Device Drivers in Windows XP

Unsigned drivers are normally the source of driver problems in Windows XP.By using sigverif -command line tool is the easiest way to get a list of all unsigned drivers that are installed.

 

Click Start, click Run, type sigverif, and then click OK.

Click Advanced.

Click Look for other files that are not digitally signed.

In the Look in this folder box, type x:\Windows\system32\drivers, where x is the letter of the drive where Windows XP is installed.

On the Logging tab, make sure the Save the file signature verification results to a log file check box is selected, and then click OK.

Click Start.

 

      

The log file Sigverif.txt,is saved in the Windows folder. Third-party drivers that are unsigned are displayed as "Not signed.".After you find unsigned drivers, you can disable them by using any of the following methods:

• Disable the device in Device Manager (you may have to click Show hidden devices on the View menu, and then disable the device under the Non-Plug and Play Drivers branch).
• Uninstall the software that installed the third-party driver by using the Add/Remove Programs tool in Control Panel.
• Rename the driver in the Winnt\System32\Drivers folder.