Why does my system freeze or lock up when using Google Chrome or Hey Cortana?
The Microsoft Windows 10 April 2018 update may cause some systems to hang or freeze running Apps like Chrome or Hey Cortana. Microsoft is aware of the issue and is currently working on a fix to resolve this. This fix should be included in the next Windows update that is scheduled for May 2018.
If your device freezes, try one of the following steps to recover Windows without restarting.
Desktops: Press the Windows () key + Ctrl + Shift + B keys at the same time. A short beep should sound and the screen will blink while Windows attempts to refresh the screen.
Notebooks: Open and close the lid of your computer, or press the Windows () key + Ctrl + Shift + B keys at the same time.
Tablets: Simultaneously press both the volume-up and volume-down buttons, three times within 2 seconds.
Additional information on this topic can be found on the Microsoft Community .