Press Ctrl + Shift + Esc and open Task Manager
Click the Performance tab
Select Memory to see installed RAM
Press Windows + R, type dxdiag, and press Enter
Check the System tab for memory information
Open Settings
Go to System
Click About
Look under Installed RAM
On Mac, click the Apple menu
Select About This Mac
Check the Memory section
Open Command Prompt
Type systeminfo and press Enter
Look for Total Physical Memory
Open PowerShell
Type Get-CimInstance Win32_PhysicalMemory | Measure-Object -Property Capacity -Sum
Check the BIOS or UEFI setup during startup
Use third-party tools like CPU-Z or Speccy