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:
• How to Check Your PCs TPM
• The Windows 7 Backup and Restore Utility
• Application, Program, Process, Service, Thread; What Does it All Mean?
• How to Setup DHCP (Dynamic Host Configuration Protocol) on a Windows Server
• Put HyperTerminal on Windows 7
• Video Tutorial 3 - The Windows 7 Backup and Restore Utility
• Tweaks to Speed Up Internet Streaming Video
• How to Create a Bootable USB Drive
• PC Technician's Guide to Providing Telephone Support
• The Security and Maintenance of Messages in Outlook Express
