video card problem

[moaied-007]

when i upgrade windows 7 to windows 8.1 my dedicated video memory was 2560mb shared system memory 1765mb after upgrade become 2048 and shared system memory 2021mb any way to restore original setting without downgrade?

my laptop hp pavilion dv6 s6170
ram 4gb

 

[moaied-007]

any solutions ?! :/