Can't authorise android lenovo tablet in USB debugging mode

I have Lenovo YOGA Tablet 2 830LC X86.

Rescue and Smart Assistant tool is a software to work with this tablet.

When i activate USB-Debugging in tablet i face the error below in Rescue and Smart Assistant tool.

Unauthorized is because after activating USB-Debugging mode in tablet and connecting my tablet to PC, there is no popup asking me if i want to trust this PC, which i have to agree (permanently).

By deleting the adbkey file found in C:\Users\[Username]\.android folder the permission dialog did n't appear on my device.

What should i do to fix this issue?

Edit after comment :

1. I am using USB charging cable.


2. I have windows 7


3. USB OEM driver for Lenovo > When i connect
   lenovo tablet to pc a pop up shows up on pc to install usb driver.
   
   So i installed it & after that i can see tablet folders.
   
   But i did n't install any other things.


4. Have you reset the USB authorization on
   the device too (usually inside Developer options) > Is this your
   mean revoke USB debugging authorization? If yes i did it several times.


5. Is the device detected by ADB (call adb devices on command prompt)
   
   I found a adb.exe in this path : C:\MagicPlusMini\app
   
   After enter adb devices command it founds : Baytrail6F284E37 offline
   
   I found another adb.exe
   
   Here is the command prompt :
   
   C:\Program Files (x86)\Rescue and Smart Assistant>adb devices

List of devices attached adb server is out of date. killing...

daemon started successfully

Baytrail6F284E37 unauthorized