Is the AGP slot dead or did I fry the mobo?

I was having a problem lately with my systim hangin up at post. It would get as far as the "Asus" screen then hang up there. Being that I hadn't cleaned the suckah in a while I opened up the case and went at it "gently" with some copressed air. Booted it up downstairs with an old 14 inch monitor I keep for testing and everything went fine. Took it upstairs and booted it up and I get nada

The machine fires up, the fans whir on CPU, GPU etc. and the thing beeps like it's booting but I get NO graphic throughput at all. I tried reseating the graphics card (which I hadn't touched by the way) and nada. Tried an old card that I know works and nada.

There is a voice code talking at boot up but I can't tell what' the heck it's saying it's so garbled. I'm at wits end. Don't know what to try next. Should I try resetting the bios? Don't know how to do it if I'm getting no visual. My system is as follows.

Athlon FX 53
i GIG of OCZ Ram'
HIS X800 XT PE with Ice II Cooling.
Asus A8V Deluxe Mobo.
Latest bios and vid card drivers.

Thanks in advance...

Da Worfster

Yeah tried old monitor, switched out AGP cards etc... It's a mobo problem. ASUS suggests that I reset the CMOS using jumbers. Problem with that is they say I have to pull everything off the friggin board to do it. Sigh... That sucks.

Thanks..

Da Worfster