Mt65xx preloader drivers anable to connect Mtk android phone to the compueter usin USB cable
In this tutorial we are going to learn how to install Mt65xx preloader drivers
PROCEDURES
1.Download Mt65xx drivers from the link below this post and extract it to your computer
2.In your desktop right click on computer icon and click manage. In the next window click on device manager
3.Click on Other device and then click on the Action at the top left corner of the window and select add legacy hardware and click next
4.Select Install the hardware that I menually select from a list(Advanced)
Select show all devices and click next and click next again
5.In the next popup window select have a disk and select Browse. Then you will navigate to where you extracted the file
6.Open All MTK USB Driver 2014>> All MTK Drivers>> AutoDriver_Win7>>x64
>>Infs>>usbvcom and select OK and click NEXT
And then click next . Wait for driver to be installed and click finish
Now you are completely installed USB VCOM drivers on your computer
Mt65xx preloader drivers >>>>>> 
In my case i installed the drivers in windows 7 but you can use this procedures for windows 8,8.1 or 10
Chapisha Maoni