The resolution of the graphics card driver becomes the smallest after updating, and the reason why it can't be adjusted is that the driver version is wrong, and the updated driver version is incompatible with the system, which leads to this problem. It is recommended to roll back to the previous graphics card driver. Taking the driver rollback under win7 system as an example, the solution is as follows:

1. Right-click the computer, select Manage and locate Device Manager.

2. Find the video card driver in the "Video Card Adapter".

3. Click the video card driver to open the properties dialog box, and then select the tab driver.

4. Select "Rollback Driver" below and return to the previous driver.

5. If it is useful to back up the driver with software such as Driver Life, use the driver to restore and restore the driver.

6. done.