More information is better than no information mate.
🙂Ok here is what I would like you to do, clear CMOS and then re-flash your bios to the same BIOS you have been using. I take it you have not recently updated your BIOS or anything like that.
Down load the bios file, extract the bios to the root directory of a fat formatted USB stick and use the EZFlash2 utility in the tools menu to flash. Follow the prompts and let your system do the full BIOIS update regardless how long you think it may be taking, do not power down.
Let me know if this sorts out your issue please.
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