Sound and display drivers. And then MS got pissed at Creative for having drivers so bad that crashes from Creative sound card drivers accounted for a non-trivi

Sound and display drivers. And then MS got pissed at Creative for having drivers so bad that crashes from Creative sound card drivers accounted for a non-trivial % of all Windows crashes. The result was MS changing the entire Windows audio stack and eliminating Creatives most lucrative product line. But apart from that, not many changes.:) WDDM was a huge one though.