What should I do if win7 cannot detect the second monitor?

## Operating environment for this tutorial: Windows 7 system, Dell G3 computer .

The win7 system is a system that we commonly use in our daily office life. Among them, some win7 users will connect two displays to the host in order to use the computer more conveniently. However, when using During the process, some people's second display screen could not be detected. In response to this doubt, the editor is here to share the solution.

1. After the monitor is connected, open the "Control Panel" and select "Hardware and Sound".

2. After entering the page, click "Device Manager" in "Device Printer".

3. In the "Device Manager" page, you can use "Monitor" to check whether there is a second monitor connected. If not, it means that this is the hardware of the monitor. There is a problem or a connection problem that requires us to troubleshoot.

4. Return to the desktop, right-click the mouse and select "Screen Resolution".

5. After entering the page, please click "Advanced Settings" in the lower right corner.

6. In the "Advanced Settings" page, we click the "Monitor" option above. After clicking, select the refresh frequency suitable for your monitor in the list below, and then click "Apply" will take effect.

7. After completing the previous steps, press WIN P on the computer and select the "Copy" option or the "Expand" option to detect or detect the second monitor. show.

Of course, before that, we must first check the connection and hardware of the second monitor accordingly, and make adjustments according to actual needs during the adjustment. Only in this way, the monitor In order to operate normally, the above is the experience shared by the editor.