video scaling problem in my laptop

[surena302]

I have a sticky problem when playing video on my laptop. when video plays in 100% size everything seems OK
but when I play the video in full screen mode video playback quality degrade baldly. It seems there is a problem when scaling up the video resolution. in this case line break and pixels turns to big rectangular. there is not such a problem when I play that video in my older laptop. the exact problem occurs when I preview photos.I also see this problem in some other brand new laptops! I uploaded two images. one refer to original size the other refer to full screen mode. please help me
thanks in advance
http://img42.imageshack.us/i/frame01l.jpg/
http://img221.imageshack.us/i/frame02.jpg/

[jagabo]

You're getting "nearest neighbor" scaling. Also known as "point resize". That's often caused by a bug in the graphic card's drivers (the default scaling method is set wrong). This can often be fixed by getting the latest WHQL certified driver for the graphics card. Or you might be able to change the "output device" in your media player. For example, here's MPCHC's options dialog:

[surena302]

thank you so much. I'm find scaling option for graphic card (NVIDIA). I change the scaling option but after press apply change doesn't take effect. I have to update the driver