Based on VIA chipset specification, VIA KT400 chipset supports FSB333/266/200 K7 CPU officially. Thus, when you install a FSB400 CPU on the MB comes with KT400 chipset, the CPU FSB will be recognized at 333MHz by BIOS automatically.
When prompted with the message “Check sum error”, please restart the system and load into BIOS setup and select “Load Optimized Defaults” option, please remember to save the settings and exit. This should fix the error, however if the problem still remains kindly contact your local supplier or our local distributor for further assistance.
This yellow "!" mark indicates if Promise RAID controller was set to RAID mode, but there are no devices attached to it. This yellow "!" mark will disappear when RAID is properly set Stripe or Mirror and devices HDDs are attached.