facing. "PC/AV" option is greyed out in my pc monitor.

[sathish ragav]

I am facing. "PC/AV" option is greyed out in my pc monitor. I checked all the things
but unable to select that option.

my samsung led monitor settings are

PICTURE
brightness : 100
contrast : 75
sharpness : 60
Samsung Magic bright : custom
Samsung Magic angle : off
coarse : 2200
Fine : 0

COLOR
Samsung Magic color : off
red : 50
green : 50
blue : 50
color tone : normal
gamma : model

SIZE & POSITION
H position : 50
V position : 50
image size : wide
menu H position : 99
menu V position : 3

SETUP & RESET
reset
Language : english

eco saving : off
off timer on/off : off
off timer setting
PC/AV mode
key repeat time : acceleration
customized key : Samsung Magic angel
auto source : manual
display time : 20 sec
menu transparency : on

INFORMATION : analog/ 67.5khz/60hz pp/ 1920 x 1080


please help me

 

[P1nnacle]

What do you have plugged into your monitor (cables).