How does a Win7 computer prohibit the use of a multi core processor?

How does the Win7 flagship ISO prohibit the use of a multi-core processor? Below, and small edit together to see the specific operation!

1. First of all, on the Win7 64-bit flagship ISO keyboard, we also press the win+r, so that we can open the computer's running window, next, we enter Msconfig in the Run window and click Enter, so that you can open the computer's System configuration window, The System Configuration window is shown in the following figure.

2. After that, we switch the interface in the System Configuration window to the Boot column and click on the Advanced Option button in the window.

3. In the Advanced Options Settings window, we can see the processor's choice, which shows the number of processors, the default is 1, the single core processor, you can choose according to their own computer configuration of the single core or dual-core, of course, there are 4 cores.