Blue Screen possibly related to on-board audio or audio drivers?

Blue Screen possibly related to on-board audio or audio drivers?

I am experiencing a frequent BSOD (upwards of 6 times a day). I've been
doing some testing and I think I may have locked it down. I would
appreciate some guidance on the next step to take.
My Specs

OS: Windows 7 Ultimate
Motherboard: AMD 990FXA-UD3
CPU: AMD FX-8350
GPU: NVIDIA GeForce GTX 580
RAM: 8GB DDR3 1333
Audio Driver: Realtek 64bit
What I've Witnessed
So far I've noticed that it doesn't happen when logged into my wife's user
profile. This initially led me to believe it was related to software
running on my profile. I've further noticed that anytime I have RaidCall
(a VOIP) open on my profile I eventually get the BSOD regardless of who is
the active user.
What I've Tried
I've re-installed RaidCall and my audio drivers. I've ran a chkdsk, virus
scan, and defrag. I've activated windows driver verifier for all 3rd party
drivers. I've rain AIDA64 Extreme Edition (trial) and received a hardware
failure alert after stress-testing for 6 minutes.
Resuts
The BSOD that happened after driver verifier was running didn't give any
valuable information. I was at work when it happened, but my wife reports
that it mentioned a driver failure, but did not give any information about
the driver. I had to stop verifier so she could use the computer. The next
BSOD I got was also while I was at work, but this time it said
"unrecoverable hardware failure".
Conclusion
I'm thinking thinking this is a problem with my motherboard. I've had
mobo-related BSOD problems in my last 3 computers so it wouldn't surprise
me. Is there anything else I can try before trying to see if the
manufacturer will honor their warranty? Thanks! ^_^