Thanks for your reply.
The yamaha driver
is indeed an old card. It is a pro audio card (DS2416) very expensive in it's time and very powerful when mixing multitracks (still very powerful at it's job). There are no win 7 drivers
for it as Yamaha stopped supporting it around about the time XP came out. I understand that it may have been part of the problem I was having but I did try running my computer with the card removed for a while and still had the same problem. In fact the reason for the purchase of the specific motherboard was due to the fact it still supported the old 5v PCI standard that the card runs on. I digress.
Since posting the above I did decide to pull my finger out of my arse and find out how to read these dumps myself and found that the most crashes, during games, was blamed on my GFX card driver. After a lot of researching and changing drivers etc I gave up and put my old mobo, chip and ram back in and all is running fine again, albeit a little slower.
I am assuming now that the problem is somewhere in those 3 pieces of hardware but I don't have similar hardware spare to do some swapping out. I was going to give my brother in law my old system but now I may just give him these parts and let him have the headache of solving it.
Finally, I've decided to do the sensible thing and separate my gaming system from my studio system and upgrade the gaming side to an sandybridge when finances allow, keeping the old mobo etc as a legacy system.
Once again thanks for your help.
I'll mark this as solved so I don't waste anyone's time but technically it's not solved it's "given up"