Your windows 7 computer name is entered during windows 7 installation. You are asked to enter your computer name at last stage of windows 7 installation.
If you want to change your computer name because of some reason, here is how you can do in windows 7.
How to Change computer name in windows 7
- Click start button and in seach box type sysdm.cpl and press Enter key.
- Under Computer Name tab click change button.
- Enter new name of your computer and click OK button.
Done!! You will need to restart your computer.