WMIC (Windows Management Interface Command) is a command line tool that returns information about the system where it's run. To open a command line shell, at the bottom of the screen, left side of the taskbar, in the Windows search text box, type cmd. To learn your computers model, vendor, and serial number, type the command shown below at the command prompt.
wmic csproduct get name,vendor,identifyingNumber

Perfoming an online search with the name and vendor information provided will return loads of information allowing you to find upgrade, troubleshoot, or repair your computer.
More Windows Administration Information:
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• Computer Technician's Guide to Electronics Disposal and Recycling
• How to Share a Folder in Windows 7
• The Security and Maintenance of Messages in Outlook Express
• How to Setup DHCP (Dynamic Host Configuration Protocol) on a Windows Server
• The Windows 7 Backup and Restore Utility
• Use Free Autoruns Utility to Disable Unnecessary Startup Programs
• Create and Change Password, Picture and User Name in Windows 7
• FreeDOS
• To Protect Your PC Disable the Windows Scripting Host
