Noisy Monitor Display.

[Techn0crat]

I have ViewSonic VA1912w(yeah, I know it's shitty okay?)
To day when I started my monitor,It was all noisy with zigzag lines.They are much noticeable on grey color.I tried changing refresh rate, lowering it to 60 from 75 but still no luck.
MoBo is Intel DG33FB and GCard is XFX 8600GT.

 

[thetechfreak]

Connect the VGA/HDMI cable on the back properly with graphics card. Its usually because of the cable.
Is the voltage proper? Is your house properly earthed?
I once had similar problem for some reason due to low voltage,

 

[Vyom]

How old is the monitor?