Error 124 is unfortunately usually useless to help diagnose the problem from an event log. It is usually a hardware issue.
I thought I had some info on it but can't find it...I'm really bummed by that.Kill any overclocking
and set back to system optimal defaults. Remove any non-essential peripherals.
As was said if Gigabyte's optional apps were installed it might behoove you to remove them at least temporarily. Though perhaps a better rule out is to simply boot up a LiveCD and demonstrate the same issue (crashing; error 124 is a Windows specific error message) meaning your OS and associated apps have nothing to do with this problem...or they do. I kind of wonder how you were able to install your OS before this started, unless this is an OC problem...or what the heck a Gigabyte app problem (System info?).
I guess I'd want a complete linking to all components of the system.
I'd consider an external minimized system build to remove parts from the list of suspects. http://www.sevenforums.com/crash-lockup ... t-try.html