I am having the exact same problem as a earlier post, but I tried to fix it the same way they did and no luck.
Here is my problem. My asus motherboard A7V running a 1.1 Amd processor will give me a bios beep code for a video card error code, long, short, short follwed by a high tone and a low tone. I have replaced the power supply as they did on the other post and even the graphics card, I bought a repalcement motherboard and it then gives me a cpu beep code and neither will boot up at all. I have gone through and pulled all the extra components of the system and tried all the different combos of parts I could think of. Any ideas please reply, it is getting close to getting out the shotgun and proving there is a problem!