Your Windows PC must have the correct MTK drivers installed. Without them, the tool cannot detect the device in Preloader mode.
: If the phone gets stuck on the Alcatel logo after unlocking, boot the device into recovery mode manually (Hold Power + Volume Up) and perform a "Wipe Data/Factory Reset." Disclaimer and Legal Notice alcatel mtk phone unlock tool v1.0.3.4 free download
: Install the MediaTek DA USB VCOM drivers. Without these, Windows cannot communicate with the phone in preloader or bootrom mode. Your Windows PC must have the correct MTK drivers installed