a-one Make sure you have device manager open. When you first enter fastboot mode, you should see an android device in other. Quickly right click it to upgrade driver software > Browse from my computer > Let me pick from list of devices > Mediatek > Android adb interface or android Bootloader. If you don't see mediatek, make sure the mediatek drivers installed correctly, do the steps above but stop at browse my computer, click browse and choose the folder where the mediatek drivers were installed/extracted too.