PC does not recognise nuvi 3597 or oregon 450

Former Member
Former Member
I have a nuvi 3597 and an oregon 450. Both were recognised until recently by my laptop. Now none of them is recognised anymore.

I'm running W7 Prof, Basecamp 4.6.2., I'm using a standard Garmin-USB-cable, I have tried several USB ports. The cable and ports work perfectly with other hardware.

What is the problem?

regards
yogi