Game randomly crashes with unknown error in module path

hi since i have bought this game since way back when,i randomly get these crashes weather it is in char select screen or mid dgn it will just for a split second freeze and then crash with no error wat so ever and to desktop there i go and when i consult the event wiever.i get this:

Faulting application name: ffxiv.exe, version: 1.0.0.0, time stamp: 0x54f4ae94
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x07104000
Faulting process id: 0x150c
Faulting application start time: 0x01d068a0f27cdcb1
Faulting application path: C:\Games\SquareEnix\FINAL FANTASY XIV - A Realm Reborn\game\ffxiv.exe
Faulting module path: unknown
Report Id: 5634eb80-d495-11e4-926e-d43d7e972d00

and i have searched all over looking for a solution.

i have tried:
graphic settings.
updated drivers.
diverent drivers.
clean windows install.
changing of ram and swoping them around.
virus and mallware scans.

pc specs:
970a-g46 mb
8adata ram x2 sticks
gtx 650 2gb gfcard
3.8 quadcore
win8.1 (old)64bit
win7 (new)64bit

please help.thanks in advance.

bump;;sooo no one have or has or had or heared of this type of thing ?or knw of someone who might have an idea of wats going on?sigh

From: http://www.updatexp.com/0xC0000005.html

Your exception code is relative to a memory error, access violation.

You could open the case and make sure the memory didn't creep out of it's socket (This is commonly called memory creep, and is due to heat)
Run a memory test to make sure you don't have a defective memory bar.