Solution:

With this question, you can do "CMOS setup -> Load BIOS default -> Yes -> Save and Exit". The "BIOS default" setting will make Cyrix CPU work better. However, it is possible that the setting is still not good enough. Because the Cyrix can not keep their quality level as good as INTEL. If you are still not satisfied by the "BIOS default", you may send your CPU to us. We can tune a BIOS for you. The POS-560 can support INTEL/AMD/Cyrix (with or withour MMX) CPU up to 200 Mhz, but we still recommend everyone to use INTEL CPU.