Generic Windows USB drivers will not recognize your Nokia 3310 in flashing mode. When you connect the phone while powered off, Windows sees an unknown device or a "MediaTek USB Port" but fails to install it correctly. The symptoms include:
from the speakers. The device manager flickered, displaying the words Elias lived for: MediaTek USB Port (COM 4) nokia 3310 ta1030 usb driver mtk best
This is the industry standard package included with (the software used to flash MTK phones). These drivers are signed and work reliably. Nokia 3310 TA-1030 USB driver (MTK) — Overview
Would you like a step-by-step guide to install that MTK driver for the TA-1030? Reliable Connectivity : The Nokia 3310 TA1030 USB