BleepingComputer Review:

MiniToolBox detects Internet connection issues due to broken or hijacked LSP, proxy settings, and problems with network adapters. It can also be used to detecte search redirections and router hijackings.

The tool has some additional feature like flushing DNS cache, listing installed programs, listing devices in the Devices Manager, enumerating the last 10 Event Viewer errors, enumerating drives, and content of Hosts file.