Viewing problem

Hi Friends

i have two problems last time

1. if i have open for example two views -  1 and 2   and want to open view 3 - view goes under 1 and 2 -  not on top as always

( i don't know if i change something or not ?  or it windows 8.1 problem ?

2. Second problem from today - i change my graphic card to GTX750Ti OC V1 ( DX11 i think )   and  my illustration mode is without line edges  ( like smooth )

Martin