Big problem, possibly mobo

Okey, well let me get right in it. My computer was working fine, no errors, no viruses, nothing. Then i turned off my computer, took the ram out properly to see how much i could sell it for and then i put it back in. At first i turn it on and its starting up, but i get no video on the monitor. I took out the video card, cleaned it up a bit and put it back in, and same thing. I take out the ram again and try running just with one stick and still no video, but i hear the computer working. Then suddenly, my bios starts beeping (3 beeps then a pause then 3 beeps again and pause etc..). I read online that those beeps mean an error in your first 64K of memory, so i put it ram from my other 2 computers and still the same thing. I reset my bios and try hooking the video up to the onboard video and still no video and those beeps. I then unhooked everything from my mobo except the power and yet again those three beeps. Is my mobo dead? I have a very old version of an Asrock mobo, k7s41gx or something like that. But like i said, it worked fine before i took out the ram. Anything i can try/do to get it to work? or is it messed beyond repair?

PC Specs:
ATI Radeon X850 agp card
Windows Vista 32-bit
1gb ram
mobo: Asrock K7S41GX
Sempron 2600+ 2ghz cpu