I also think that it's a sign for you to change your old monitor and buy a new one. The problem with broken pixels are frequent and in most variants the guilty is a monitor itself, but not cables.
Location: 2711 Centerville Road, Suite 400, Wilmington
Posts: 146
Hi,
Verify the resolutions that both your monitor and video card support. And try to update your vedio card driver from its manufacturer site that might solve the problem.