Exactly the same issue here!
Details:
Been away from FFXI for 17months. Come back on and installed FFXI from newly purchased steam download pack. Fresh install of OS and everything. First sign of problems is when the sound goes. After that, I'm pretty much waiting for a crash. Mid Abyssea party it went 4 times and crashed each time. Opening a chest boots me from the game. Talking to a NPC boots me from the game.
Steps:
No real steps occurred to replicate the error, it just seems to happen soon after losing the sounds. I have had a crash with the npc in port jeuno. the shop near the AH and the npc to the left.
Date & Time:
Last time it happened was opening a gold chest in Abyssea - Vunkerl. 26th March 2012 @ 16:45 GMT+1
Frequency:
State how frequent the issue occurs. Always, not had an instance without a crash since my return last week.
Platform:
Windows PC
PC Manufacturer & Model Number:
Homebuilt system
My Computer specs:
Z68XP-UD3P Motherboard
On-Board Sound Hardware - Realtek HD Audio
i7-2600k @ 3.4GHz
16GB Corsair Vengeance RAM
Operating System:
Windows 7 Ultimate x64bit (SP1) Fresh install all updates done.
Graphics Card:
EVGA Nvidia GeForce GTX 560 1024MB DDR5 - latest released Nvidia drivers.
ISP:
Virginmedia UK
Type of Internet Connection:
Fiber Optic 30mb
Will provide a copy of dxdiag if needed. Awaiting on confirmation of error and any assistance is greatly welcome!