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KR7A no POST with code C1.

<Symptom> Why does the KR7A board fail to POST with debug code C1? Is the mainboard faulty? (KR7A/KR7A- RAID with BIOS 5D or 6G) <Explanation> It may be caused by incorrect CMOS data and clearing CMOS for more than 30 seconds can solve this problem. We had implemented a fix on BIOS 6N to reduce the possibility of this issue. If the BIOS 5D and 6G works fine on your KR7A/KR7A-RAID, and never happens no POST symptom, it's no need to update to 6N.