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 Share a Folder in Windows 7
• Three Important Techniques for Securing a Wireless Network
• Basic Functions of Microsoft Active Directory
• Use Windows 10 File History Option to Backup Your Personal Files
• How to Audit Security Permissions and Access Rights in Active Directory
• Create a Windows 7 System Repair Disc
• Disable Programs That Run at Startup on Windows 10
• Use Free Autoruns Utility to Disable Unnecessary Startup Programs
• What is Hyper-V in Windows Server 2019?
• Configuring Windows as a NTP (Network Time Protocol) Server
