Windows 7: BSOD while playing Dragon Age Origins

I like to consider myself fairly computer literate but I am having lots of trouble playing this game without my computer BSOD. I recently recieved a birthday present of a Sapphire Vapor-X 4870 and also Windows 7 64-Bit and since then I have had no end of trouble playing DAO. I have uploaded 2 crash dumps with this post in the hope that someone who knows more about this sort of thing would be able to help me as I have come up with nothing so far.

Ran memtest for 6+ hours with no errors.
Used various different catalyst versions to no avail.
Updated onboard sound drivers for my motherboard (Realtek HD Audio).

As far as reproducability goes, if i play DAO it will always BSOD eventually, sometimes it takes 30mins sometimes up to a 2-3 hours but its fairly consistent. The error code was always 0x0000003b until i worked out how to use windbg and found msnmsgr.exe (Windows Live Messenger) to be the 'likely problem driver'. I then played DAO without windows live messenger running in the background and recieved my first 0x0000001e error code.

Anyone got any ideas?

Just BSOD again after 1 hour of DAO, this time im back to 3b error code. Please help, having my computer restart 10 times a day is incredibly annoying.

With the latest drivers for your card and chipset, you receive the same problems?

There are not any driver downloads available for my motherboard for windows 7. I therefore downloaded the nforce 570 chipset drivers from NVIDIA DRIVERS 15.51 WHQL which i believe are the latest. I am currently using Catalyst 9.11 as my display driver which is the latest.

https://a248.e.akamai.net/f/674/9206...cc_wdm_enu.exe

Latest ati drivers

ok i am downloading and installing them as we speak, but do you really think i should be experiencing this much trouble due to not having drivers that came out today?

Have updated my graphics driver to no avail, crashed whilst i was ALT+Tab'd this time, reading this thread. Have uploaded the crash dump.

bump, no1?