Microsoft Surface Diagnostic Toolkit - is a useful troubleshooting app for your Surface device and can identify and resolve most common issues but will also point you in the right direction support-wise to resolve your problem. Microsoft Surface Diagnostic Toolkit runs the following tests • Windows Update • Battery Tests • Discrete graphics (dGPU) test • Device information • Type Cover test • Integrated keyboard test • Muscle wire test • Dead pixel and display artifacts tests • Digitizer tests • Home button test • Volume rocker test • Micro SD test • Microphone test • Video out test • Speaker test • Bluetooth test • Camera test • Network test • Power test • Mobile broadband test • Accelerometer test • Gyrometer test • Compass test • Ambient light test • Device orientation test • Brightness test • System assessment • Performance Monitor test • Crash dump collection What's New * not available Title Release: Microsoft.Surface.Diagnostic.Toolkit.2.138.139.0 Developer: Home Page License: FreeWare OS: Windows Download: Microsoft Surface Diagnostic Toolkit 2.138.139.0 (10 MB)