i5 2500K Locked at 33 mutiplier

Hi, my i5 2500k was working fine on my Asus P8Z68 gen 3 motherboard.

I moved it to a Z77 motherboard for a while and had an i3 2120 in my Asus P8Z68.

After I moved my i5 2500K back to the P8Z68 I updated it to the latest bios and after that the multiplier will not go above 33.

I have tried updating bios again, clearing cmos and removing battery.

Any ideas?

Thanks.