Cannot connect Garmin nuvi 3760 NO matter what.

Hello,

I've done some scouting on these forums and google in general regarding my problem.
I want to update my Nuvi but it doesn't get recognised by either of my 2 computers. i've tried several cables.

I tried to go to preboot setting but when i turn on the nuvi and hold topleft i see system flashing and it goes to loading and the it boots up as usual.

i cannot change the MTP mode or anything else, the diagnostics page does not show me this option.



i installed the drivers for usb on the garmin website as well but they do not help. i tried all usb ports too.

Both of my computers use Windows 10 Pro x64 could this be the problem?
I hope you all can help me out here..

Alex