Asrock motherboard like the Z77 Extreme 4 has a feature in the BIOS for Non-K CPU.
Write the cpu's number 9 times on Brown Paper. Roll the paper away from you into a tube shape and slide it inside a glass bottle. Then fill with some coffee until the bottle is full. Close the bottle and seal it with wax from a purple candle. Wrap the bottle in black cloth. Tie with Cotten Twine making 9 knots. Take the bottle to a body of moving water like a river or ocean. Toss into the water over your left shoulder and walk away without looking back. You now be able to boot into the BIOS and lower the multiplier.