小弟在今天又跑去看 VIA 的討論區，
看到這篇文章：

http://forums.viaarena.com/messagev...4&enterthread=y

在最後的回應裡：
Answer is simple. Go into BIOS and hit CTRL+F1, go into advanced settings and AGP and P2P Bridge, and set AGP to 4X, save it and go again, all should be well. For some reason this board doesn't like AGP 8X, I DO NOT KNOW WHY, as it is advertised as AGP 8X.

各位的網友，有相同的問題的話，可以試試看。
小弟那台因為是當 server 用，沒馬上去試。