Can't get rid of "under scan"...

Howdy,

I've been away from the HTPC game for the last few years because I liked the stability of STB for BD playback, but things seem to have gotten a little more stable, and I'm intrigued with the idea of WMC or XBMC - especially since I can control it in "lean-back" mode with my iRule setup. Played around with XBMC on my office and I really like it so far.

So, I picked up a used HP dual-core Intel 2.4ghz box, threw some RAM in it, and threw in a generic Radeon HD 4350 card a buddy had laying around. Finally got it hooked up via HDMI to my system last night, and I can't for the life of me figure out why it won't go full-screen. Windows 7 and the Catalyst software both say it's running 1080/60, but there's a pretty healthy border all the way around the screen - maybe 5% or so. Text and everything is a little soft, so it's obvious it's not 1:1 pixel-mapping, so something is scaling/padding somewhere.

My signal chain looks like this:
HTPC > Integra DHC-9.9 > JVC RS45

The projected image is fine with all the other sources... I've looked everywhere - the PC, the Integra... I've tried different refresh rates, and I can't see where to get rid of it this border.

I'm hoping this isn't the beginning of a series of reminders why I hadn't done anything with HTPC for awhile.

Of course, my theater is a stop on a meet crawl tomorrow and I was hoping to demo some XBMC/iRule integration (at last that part works awesome!).

Anybody have any ideas?

Thanks!

SC

Sammy... Yeah, it's an older machine. In my experience, a 2.4ghz C2D should be fine for playing some BD rips and streaming content. I have less than $200 in this machine though, so I don't have any unrealistic expectations. If I like how things work, I'll upgrade the hardware.

Stettin... Thanks for the snarky response. In the time you spent to write the lmgtfy response, you could have just written a helpful response, more typical of AVS. Say, something like:
Not sure why didn't try googling it, but I'll try the solution. I thought I clicked on every damn thing I could click on, including the triangle, but I must have missed something.

Thanks, guys.

SC