Help with My Computer Video, Please?

Okay, I have a nine-month old Vista box that is great… until recently. The video has become crazy – only showing about one frame per second or so. Audio is fine – it's just video problems. I've noticed that when I minimize windows, the closing window will "stutter" closed, and the same thing happens when I drag a non-maximized window across the screen.

I've got Kaspersky anti-virus and nothing is registering. I also use the Search and Destroy Tea-Timer and Ad-Aware to keep my box clean – and they reports no problems at all.

HOWEVER, every couple of seconds, the Start Bar (which I have set to auto-hide), flashes into view, like I moused-over it for a micro-second.

I use a 24" LCD TV as a monitor (which hasn't had any problems thus far), and I also use a cordless mouse and keyboard set-up. My resolution is set at 1360×768 pixels (32-bit colors) – and my vid card is an NVIDIA GeForce 9100.

Any given moment, when I check my system status, it tells me that I have around about 20% CPU usage and about 32% physical memory usage.

Can a geek help me out? I can't watch DVD's, nor play CD-based games – and I've noticed that stupid flash-games that are memory intensive have been "hanging" periodically. I haven't received any Facebook messages saying that I am spamming with viruses or anything… so I don't think I've been hijacked…

Thanks!!

Suggestion:

That does not sound like any kind of virus but a problem with the display or display drivers or even conficting antimalware programs., try updating the chip set/video drivers.
Not sure what's happening with the start bar.
I would remove the S&D tea timer it's useless anyway and not needed with Kaspersky running.
Also remove Adaware and use Malwarebytes for the occasional scan instead as they both could be interfering with Kaspersky.

The cpu and memory usage seem normal for Vista.