You can use the following six methods to open Windows 10 Computer Properties (i.e. System Properties).
Video guide on how to open Computer/System Properties in Windows 10:
Way 1: Turn it on via This PC's context menu.
Step 1: Right-click This PC, and select Properties from the menu.
Tip: The File Explorer's context menu can also help achieve the goal.
Step 2: Choose Remote settings, System protection or Advanced system settings in the System window.
Note: This step is a must-do procedure and it won't be repeated in the methods below.
Way 2: Open it via This PC and keyboard shortcuts.
Tap This PC, and press Alt+Enter on the keyboard.
Way 3: Turn it on via keyboard shortcuts.
Press Windows+Pause/Break on the keyboard.
Way 4: Open System Properties via searching.
Type system in the search box on taskbar, and select System in the result.
Way 5: Turn it on in Control Panel.
Access Control Panel, choose System and Security and then hit System.
Way 6: Open it through Settings.
Step 1: Search about, and click About your PC in the options.
Step 2: Tap System info on the right.