many many thanks for the help!!!
update: yesterday I was going to melt my brain... (my very low knowledge is the first obstacle so...), but today I started from the original state (maybe crazy but...)
1: I resolded the 2 old cypress on the 2 pcb, tetsted and.. the pc installed only 1 driver generic usb hub
2: I tryed to swap the two oscilator 32.768KHz (as you suggest), tested and...
finally the 2 driver iso istalled!!! iso led ON
ok good start
now I think the best idea is just change the bad oscillator in the can pcb and see the result,
I will buy the oscilator and will try..
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