HDMI cable = shit WHYYYY

Hey so i got a brand new monitor today full hd, and so i check it out, notice it has a hdmi input and im like OOOH

So i take the one from my xbox, plug in my component cables to my xbox, go to plug the hdmi cable in from the back of my computer to the monitor, it works but AAAAAAAAAAAH

Its 1920x1080 rez of course but it looks like PURE SHIT.

I'm like well fuck. If its the monitor i'm shitting myself.
I try the VGA input (run thru a vga to dvi into my gpu) and it works great..

SO basically the HDMI is fuzzy as fuck and the vga works

makes me angry /grr ANYONE else had this problem?