fix screan resolution in window 7

i am going to tell you to how u can fix problem of your pc graphics in window 7......first of all check your driver is properly installed or not...if not then installed it if then also not issue resolve then open your bios setup then go to integreted devices or legacy option..
video buffer change 1 mb to 8 mb then check your resolution .......i am 100% its work now....thanks for learn it...or read it