Is your Chromebook acting up? Jack Wallen introduces you to the ChromeOS Diagnostic tool, with which you can run hardware tests on your Chromebook.

How to run Apple's diagnostics To initiate the Apple Hardware Test or Apple Diagnostics (depending on what year your machine was built), shut down your machine completely.

HP PC Hardware Diagnostics UEFI helps you diagnose and fix PC memory, disk, etc, problems on Startup. Learn how to use it, install it or disable it.

Microsoft Surface Diagnostic Toolkit Running the Microsoft Surface Diagnostic Toolkit requires the user’s attention, and the diagnosis process is a hands-on activity.

TestM for iPhone and Android Designed for iOS and Android, the free TestM app can run diagnostics on your phone's touch screen, sound, camera, sensors, network connectivity, and other hardware.

TestM for iPhone and Android Designed for iOS and Android, the free TestM app can run diagnostics on your phone's touch screen, sound, camera, sensors, network connectivity, and other hardware.