Folks, I've got my 720BE and a MSI DKA790GX board today. (can't wait to finish @ work already )

My question is, what can happen if the 4th core fails to unlock?
Can I revert back to only 3 cores and continue from where I left off?

Sounds like its possible, though I feel like I've read somewhere that I may end up with a crippled/non-functional CPU, is that right?

Thanks a lot~