Your computer name defines how other computers can spot you on a network. You can give your computer any name you choose. Changing the computer name will not affect how you log in.
Click on the Launch button . The Launch menu will appear.
Click on Settings . A menu will appear.
Click on Rename Computer . The Rename Computer dialog box will appear.
Type a name for the computer. You can give it any name, but the name can't contain spaces or special characters .
Click on OK . The computer will now have a new name.