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:
• Create a Windows 7 Disk Image Backup
• SMART Disk Drives Warn You Before They Fail
• Windows PC Performance Troubleshooting and Optimisation
• CompTIA Security+ Made Easy
• How to Configure the msdos.sys file
• Choosing a Tape Drive
• How to Change Process Priorities in Windows Task Manager
• PC Technician's Guide to Providing Telephone Support
• How to Erase a Hard Disk Drive Permanently
• What is Hyper-V in Windows Server 2019?
