In Windows 10, File Explorer opens by default in the Quick Access folder. After build 9926, it is possible to change its behavior and set it to open in the "This PC" folder instead of the quick access.
How to default explorer to start from “This Computer” instead of “Fast access".
Microsoft has taken care of this setting by adding a new option that allows you to set the default folder to be opened by File Exploser. You will need to do the following:
1. Open file explorer (File Explorer).
2. Go to the "View" tab and press the "Options" button. Alternatively right-click on the "Quick Access" folder and in the pop-up menu click on "Options"
3. On the General tab in the folder options, select “This Computer” from the drop-down list instead of “Quick Access”
4. Press the "Apply" button.
Close them all now if you press the Win + E keys on your keyboard at the same time or if you simply click on the icon of File Explorer on the taskbar, it will open directly to “This Computer”