Hi all

I recently got a new PC with an ASRock N68C-S UCC motherboard that's got a built in NVIDIA GeForce 7025 / NVIDIA nForce 630a card (according to the Control Panel). I'm finding though that, when I watch high-quality video files on it, the picture quality isn't very good - all rough and grainy. The drivers for the video card are up to date but it's not making any difference.

Any ideas?