In this windows 8 tutorial I will show you how to change your computer name on a windows 8 system.
Go to Desktop version of windows 8.
Drag your mouse to top right corner of screen and click settings. Or simply press windows Key + I buttons on keyboard.
Click PC info
Click Change settings under computer name, domain, workgroup settings.
On next windows click change.. button as shown in below image.
On next pop-up windows you will get option to enter new name of your windows 8 computer.
After entering new name click ok button to save the change. You will also need to restart your computer to apply the change.