A:
In most cases, if the connection is an HDMI input - which is a pixel by pixel representation - then you may want to check to see if your video card driver has an available update.
Also, you'll want to check your resolution and your aspect ratio settings to make sure they match the specifications of the monitor.
Some monitors will have a higher resolution, and that's why those models are specifically sold as monitors. Smaller televisions may not support a HD signal, and if you set your resolution too high or the aspect ratio incorrectly, the picture may do what you described.
We hope this helps you get the most out of your products.
Thanks for your interest in Samsung televisions.
--Mr.Samsung