No X79 boards are in production that I know of. The only new products available are literally $400 or more and they aren't ATX, intended for servers and you would have to have a special case to fit them.
X79 chipset boards are the only option for any processor that would have been in them. X99 uses a similar socket, but uses DDR4 rather then DDR3 and is not backwards compatible. Might be some C602 boards out there, but generally people just replace failed hardware at this price level.
You are looking at around $600 or more to replace the CPU, Motherboard, and RAM. That is pretty much the only 'in production' fix.