asrock M3A790GXH 唔好upgrade 去1.70 BIOS

asrock M3A790GXH
AMD 550BE 本來行緊1.20 BIOS, VISTA 64 有小小cold reboot problem, upgrade 去 1.70 BIOS 試下
點知 每隔一分鐘 就 vista 入邊就 VPU recovery 一次, 係無行program.
關左ACC都係一樣
downgrade 翻 1.20 BIOS, 就OK 番
頂, D BIOS 有無QA 架?