For Surface 3 devices and newer. Part educator, part detective, and part doctor, the Surface Diagnostic Toolkit guides you through a set of software repairs and hardware diagnostics to quickly and efficiently uncover and resolve issues you are experiencing on your device. Use this app to lookup information about your device, repair common software issues, and validate your Surface hardware. The Surface Diagnostic Toolkit is the best place to start troubleshooting, and will guide you to the best support avenue for the quickest resolution, so you can get back to turning ideas into actions and accomplishing more with your Surface.