hy guys i have connected my bravia 32s400a with a pc through RGB or vga cables but the trouble is the result is all rainy i mean screen is kind a watery like rain effect it gets more prominent after increasing the sharpness ,is it due to my gfx card because it is old nvidia geforce mx 400.the thing is when the pc is running and i take out the plug of tv and put it back again the result then is crystal but it gets back so tell me is it because of my pc help