Windows Desktop Won't Properly Size

I can't get the desktop to properly size up on my screen. You can notice in the screenshot (in the lower right corner) that part of the taskbar is cut off. I have tried making adjustments via the NVIDIA control panel to no avail. Can anyone give me any advice on how to fix this issue.

I'm using a 50" Plasma HDTV and it is hooked up to my PC via HDMI. My previous HDTV was a 42" LCD and I never had a problem with desktop size and position.
Thanks in advance!

Ztruker said:

Try a different resolution? Right click on the Desktop and select Display Settings then Advanced display settings.

Thank you for the suggestion but I don't desire to go any lower than 1080p.
All of the other resolutions look worse anyhow to be honest.

JohnC said:

Cool desktop. There is a small button on the taskbar to the extreme right. I think that is what you see. Try this, bring up a browser on the desktop and then click on the extreme right of the taskbar. The browser window should minimize. On my 23" display the left edge of the button is a small bright line .5 mm from the edge. If I click to the right of the line, I can minimize the display of all running programs, leaving only the desktop.

That worked as you described. That small bright line was further than .5 mm from the edge in Windows 8 and I guess I got used to that. I thought that it was cut off from the screen as a result of my desktop being sized wrong.

JohnC said:

I wish I had 50" problems.

To be honest I think it's too small. I'm going to be getting a 65" HDTV for my PC gaming in a couple of weeks. I sit about 6' away from the TV and I play a lot of MMO's which have small text in terms of their UI. It's challenging to throughly read the text on the 50" TV.

My set up...