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:
• Computer Technician's Guide to Electronics Disposal and Recycling
• How to Erase a Hard Disk Drive Permanently
• Computer Technician's Guide to Safety
• Guide To Setting Up Dual Monitors
• PC Technician's Software Copyright Responsibilities
• Set the User's Profile Information
• CompTIA Security+ Made Easy
• Computer Data Backups - Test Now or Cry Later
• How to Transfer a Large Amount of Data Between Two Windows 10 Computers
• DOS Tasklist and Taskkill Commands
