graphic memory reduces due to change in OS

Belmond_1

Commendable
Nov 6, 2016
2
0
1,520
hi guys, i have an hp laptop, 4gb ram, 2.89ghz quad core. when i was using windows 8 the graphics memory was 2.7gb and video memory was 512mb, now that am using windows 8.1 the graphics momory has gone down to 725mb and the video memory is showing 0mb. pls what should i do?