Intel cpu serial number can be checked in official website in that place.

1, you can click to enter the command prompt.

2. Enter the following code to query the serial number.

3. Or click to enter the "About" option, as shown in the figure below.

4. Check the cpu type and device ID, as shown in the figure below.

5. You can also enter Intel official website.

6. Click the "How do I identify my processor" option.

7. Just download the application that recognizes the serial number, as shown in the figure below.