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:
• Environment variables in PowerShell
• How to Audit Security Permissions and Access Rights in Active Directory
• Easy PC to PC Files and Settings Transfer Cable
• The Windows 7 Backup and Restore Utility
• How to Map a Network Folder in Windows 7
• Command Line to Get Computers Model, Vendor, and Serial Number
• Retrieving Information from Computers Belonging to an Active Directory OU
• Configure Windows Indexing Service for Performance
• Common Issues With Windows Firewall
• SMART Disk Drives Warn You Before They Fail
