Error codes on Z77 extreme 4

djm492

Honorable
Aug 2, 2013
6
0
10,510
I recently build my first rig. It was working fine for the first months, in the last few weeks I have had problems with the computer. On my motherboard when starting up I get error 4f and after a few seconds the error changes to 79. What could be causing the problem and how can I fix it?
4f is a memory problem but why would the computer work for a month and then the memory not work?