| Symptom | Likely Fix | | :--- | :--- | | Windows chimes "Ding-Dong" when plugging in, but tool shows nothing | Run Zadig → WinUSB | | No chime, no LED | Cable: Swap to data cable. Power: Use external power supply. | | Device shows "Unknown Device" in Device Manager | Driver: Install DriverAssitant. Disable Signature Enforcement. | | Device worked once, now "No Devices Found" | Sequence: Unplug power, short CLK/GND, then plug USB. | | VirtualBox lists the device but tool says none | VM Settings: Change USB controller to USB 2.0 (OHCI+EHCI). |
I reached for the . I uninstalled the old drivers—remnants of a dozen other projects—and reinstalled the fresh ones, rebooting with the desperate hope that a fresh start would fix everything. When the desktop returned, I opened RKDevTool as an administrator. Still: "No Device Found."