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:
• Choosing a Tape Drive
• Find Your WiFi Password on Windows 10
• Understanding Windows 7 Security Center
• Recovering an Older Version of a File
• Windows 7 Tweaks
• How to Create a Bootable USB Drive
• Installing a Network Printer on Windows XP and Vista
• Hard Disk Management
• Disable Programs That Run at Startup on Windows 10
• DOS Switches and Wild Cards
