Check the laptop’s system settings
Open the About section in Windows, macOS, or Linux
Use the System Information tool on Windows
Use the Task Manager Performance tab on Windows
Use the Device Manager on Windows
Check the Apple menu and About This Mac on macOS
Use the terminal or command prompt
Look at the label on the laptop body or bottom panel
Check the original product box or receipt
Visit the manufacturer’s support website
Enter the serial number or service tag on the manufacturer’s website
Use third-party system information software
Check the BIOS or UEFI setup screen