I can't find any drivers for this card, I am using Windows 10 and need to update to play Company of Heroes 2 without crashes. The AMD site doesn't have this card in it and autodetect can't find anything.
There is no such graphics HD4600...it probably says HD4600 SERIES...which is a series of cards.
What is your processor/APU?
Use GPU-Z and select 'Lookup' it should tell you the exact card you have: