Even still its alot of money to try and sell your ivy cpu to then buy a haswell.
I would RMA or replace your current mobo if its playing up, I really like my gigabyte Z77-UD3H motherboard. Really, really good features, handles overclocking superbly. Has some quirks, like all motherboards, in that sometimes if an overclock is unstable bios freezes and you need to reset CMOS, but thats only minor in my opinion.
I would recommend it.