Two methods to set the boot default win7 system under dual system

Method one,

1. Right click on the “Computer” and select Properties, then click on the left side of the “Advanced System Settings” item;

2, in the popup In the system property interface, switch to the “Advanced” tab, and then click “Settings” under Startup and Recovery;

3. Then start and recover from the popup. In the window, select the default operating system drop-down button under "System Startup" to select the WIN7 system as the default operating system.

Method 2,

1. Press the “Win+R” key on the keyboard to open the Run dialog box, then type msconfig and press Enter;

2. In the open system configuration window, switch to the "Boots" tab, then click on the item you want to set as the default startup item, and then click "Set as default" below to confirm restarting the computer.