Hey thanks for the advice.
I haven't yet tried the Bios update though I have loaded and reloaded the nVidia drivers several times. Call me chicken, but I've not done a Bios update before and I'm just a little timid at the moment. Thought I'd allow my wife to enjoy her Ipod software I bought her for Christmas for a few days before I mess up my system! lol
I'll probably do it in a couple days. In the meantime, the driver update hasn't really made a noticeable difference. Some of the prob could be a cooling issue. The card runs hot and the HP mid-tower case doesn't allow much room for modding. The artifact prob seems to increase with higher temps. But I still get some at average temps in the 50's which seems a bit low to be dealing with it. Temperature increases can go up 15 degrees within the first 30 seconds of video play or gaming. At idle before use, the case is about 44 degrees. Within a relatively short period it can increase to 130 degrees. That's 10 over the performance threshold. It seems that unless this issue is solved I'm operating in the red most of the time.
The artifacts are: stationary blackened pixels (random dots) in the distance while playing COD2 and on the HL2 initial loading screen. The HL2 ones disappear when the game is fully loaded. COD2's usually are fixed by restarting the level or by changing the AF setting.
But I'm still getting the blinking verticle lines of red and white dots while playing video. Tried this with a number of video clips from various sites as well as DVD playback. Gets worse with higher temps.
As far as the heat issue goes, water cooling isn't worth the expense right now. And with my two optical drives I have no room for a front fan. One option may be to bore a hole in the case cover on the side and attach a second fan there.
Even if the chipset update helps with the anomalies, the heat/cooling issue may prove to be a real kink if I can't find a way to sufficiently lower the case temps. I'm assuming there is a possibility there is a defect with the card too.
If I can't find a practical way to resolve the issue, I've given serious consideration to returning the card and holding out until I can do a total overhaul with new case, mobo, and pcu that are pci-e ready.