Fcuk they just got the latest payout to a new address and key !!!
how can stop payments until I load a complete new version of core?
I'm going to wipe the drive reformat
Man, I feel your pain and I hope you get squared away on this. Ever heard of hardware wallets (KeepKey, Trezor, Ledger, etc)? When you are not using them you can unplug and store them in a safe...and they use all kinds of security like 12 word recovery and randomly rotating numeric pads for entering your pin, etc.
Ouch! Hope you get it all sorted. Indeed I'd get a separate machine (non-Windows) for your hot wallet and a Ledger S, should help prevent it happening again.