Computer name is randomly generated and assigned during the installation, you get first chance to change it in Initial Configuration Tasks (ICT) Wizard. If you have skipped ICT wizard you can follow this process.
click on Start and select Run option. In run window type system.cpl and press ok
It would open system properties window click Change button
Type computer name
Always use a descriptive name with proper naming convention for server and other network locations.
After filing computer name click on ok and click on close
Restart is required to take effect. It would prompt for restart. Click on Restart Now
After restart computer name would be changed.
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