ADB not recognizing device anymore

I have already asked about this problem, and still haven't found the solution but i got more leads, so i'll try to explain it as quick as possible:

I have a windows 7 64-bit laptop, using eclipse platform and I want to test my app on DataLogic DL_AXIST android 4.1.1 device.

This android device shows on all other pcs and adb but mine.
The first time this device's driver was installed on my pc, my adb showed it but not anymore for unknown reason.
Device is connected as MTP, driver installed correctly, I tried all other pc connections available --> it shows in my computer but not on adb!!!
I even created adb_usb.ini file in .android folder and added HEX hardware ID of device and still doesn't work.
Debugging mode on device is running, i have restarted ADB as well.

Please if anyone knows another method do tell me i'm losing my mind

Solution

ADB requires that the USB debugging tool be paired with the Computer.

In Config -> Developer Options, uncheck the "USB debug mode", unplug the USB cable, check "USB debug mode" again, then replug the USB cable, a prompt stating "Do you trust this XY:AB:CD:EF device" and allow it for a new connection.

edit

If the prompt for pairing was not triggered, revoke all debbuging permissions (in the same screen), and redo the activation process.

I am sorry that, my devices are in another non-english language, so I do not know the way its probably spelt in english.