This behavior frequently indicates a driver conflict. Open the Windows Device Manager, connect the phone in its boot state, and verify that it doesn't show a yellow warning triangle. If it does, reinstall the USBDK backend drivers and swap out your USB cable for a shorter cable connected directly to your motherboard's rear USB ports.
Unlock or relock bootloaders with one click. mtk client gui 20
Extract the zip file into a dedicated folder on your main drive (e.g., C:\MTKClient_GUI ). This behavior frequently indicates a driver conflict