Solution: 1 Right-click My Computer and select Properties. 2. Click the hardware tab, and then click the driver signature button; 3. In "What do you want Windows to do?" Click Ignore-Install the software without my permission. This will allow all device drivers to be installed on this computer, whether they are digitally signed or not. 4. In the "System Administrator Options" column, select the "Make this operation the system default value" check box to make the selected setting the default value for all users who log on to this computer; 5. Click the OK button.