Ok, i have a 1080p led tv which i am using as a computer monitor. It recomends that i have the resolution as 1360 by 768. If i make the resolution larger it donly shows part of the desktop. How do i fix this, everything looks blurry. I have updated my graphics drivers and i am connected using an hdmi cable.

Could you confirm that the (unknown) graphics card supports modes that you are using? Rgds Milos

I have a nvidia gt 520, how would i check to see if it supports them?

You may reinstall the graphic adapter driver and then check it again.Ivan-Liu TechNet Community Support

i tried that

If the TV's resolution is 1360 by 768, then that is the resolution you need to set under "Screen Resolution." You can't make it any bigger without messing up the image. The native resolution will always give you the best image quality on a digital TV or monitor. Lots of TV's are advertised as *accepting* 1080i/1080p signals, but that doesn't mean they actually have 1920x1080 screens. They just downscale the image to the screen's native resolution. It's also possible that your Nvida control panel has a special setting for HDMI 1080, or a default/automatic setting. HDMI devices should auto-negotiate settings.