levelD fmc problem

I've a problem with levelDs 767 fmc. On the vnav page the descent page is not shown correcty. Normal you should read information in that page but i found nothing only '' decent now'' instead of ''decent direct'' which i saw in the tutorial2longhaul. When i reach TOD the VNAV isn't able to descent. It does nothing even if i activate''descent now''. So i've to descent with ''level change ''. 😞
Maybe it's a dumb question but i if someone knows the solution i would be very thankful.
And a less urgent problem is that the fms not contains STARs ?