1. Move the mouse to the lower right corner and move it up, or move it down from the upper right corner. You can bring up the right column and click the Settings button at the bottom.
2. In the panel that appears, click the power button below;
3. At this point, a menu of options will appear. Hold down the shift key and click the restart option.
4. A page will appear after a while, and select "Troubleshooting";
5. Click "Advanced Options" in the page that appears;
6. Select the last item "Start Settings";
7. Click the restart button in the lower right corner of the page;
8, the computer will restart, and then come to such a page, prompting to use the number keys or function keys F 1-F9. Press the number key 7 or F7. At this point, the computer will automatically start to enter the desktop, and it will be no problem to reinstall the driver.
The above steps are the operation steps of disabling driver digital signature in win8. 1 system. Users who need them may wish to refer to the settings.