I thought I'd post one last time before sending my laptop in for RMA this week for the damned static noise I have coming out of my speakers. I was able to live with it for a while..but lately games are causing even worse noise from the thing

It's more or less related to the AC adapter. When my laptop is plugged in video displaying causes high pitched noises out of the speakers (more the top left speaker than the right). Unplugging it causes them to be signifcantly reduced. A 2 pronged converter does not help me either.
I have even tried uninstalling the sound card entirely, but this doesn't make it any better. I have determined it is in fact more the video card than anything else though. Dragging things around my screen causes significant noise, and this NWN toolkit is noisy as hell but only when its maximized. Removing the battery while running on AC power does not fix the problem. So what should I do? Could it just be a poorly grounded AC adapter. Does this look like an internal grounding problem?
Furthermore when I go to RMA it I want to make sure I do it right. Calling PCTorque I was told I had to fill out an RMA form on the website and go then send it in once I had a reply. I always like to do things with a real person on the other end, but if email is the only way then so be it. I am extremely pessimistic about RMAing this thing. Let's just hope it goes ok and I get it back at least somewhat better than I sent it in.