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
• How to Erase a Hard Disk Drive Permanently
• Turn Off Windows XP Service Pack 2 Firewall
• Put HyperTerminal on Windows 7
• How to Configure the msdos.sys file
• Script to Display the Processes Running on a Computer
• Configure Vista's Data Execution Prevention
• Hard Disk Management
• Firewall Rules
• Set Up Parental Controls
