Re-install the MTK VCOM drivers. Try switching to a USB 2.0 port instead of a USB 3.0 port, or use a different USB cable.
Re-install the MTK VCOM drivers. Try switching to a USB 2.0 port instead of a USB 3.0 port, or use a different USB cable.
Re-install the MTK VCOM drivers. Try switching to a USB 2.0 port instead of a USB 3.0 port, or use a different USB cable.