Change the name of the computer in Windows 7

If you do not specify a name to your computer while installing Windows 7 then My-PC name will be assigned automatically. You can change the computer name by performing the following steps:
1. Click the Start button . Right-click Computer and then click Properties.
2. From the left pane, click Advanced system settings (If you are prompted for an administrator password or confirmation, type the password or provide confirmation to open System Properties dialog box).
3. Click on the Computer Name tab and then click Change...
4. Type a name in the Computer name: box and then click OK.
5. Click OK again in the Computer Name/Domain Changes dialog box.
Restart your computer to have the computer name changed.