I have been having this problem for quite some time. I just recently installed a clean install of Windows 7 Ultimate 64bit and there were no problems in the installation. A problem occurs every time i launch a game, for example Fallout 3, Counter-strike 1.6. I'm not sure what it is, but i had Windows XP before Windows 7 and then Counter-strike 1.6 always crashed into Blue Screen and i went with my computer for a repair and they told me the memory was bad, so i bought a new memory, but i am still having these problems. I recently used Windows memory diagnostic and the results were that their was a hardware failure, could there be something in the computer damaging those RAM's? And if so what could it be - i'm always guessing if the video card, power supply, processor is the problem? Is there some kind of a program that can check this stuff out?
I have uninstalled the previous sound drivers and looked up for the latest sound drivers from the manufacture (Gigabyte) - i'm still having these errors, i changed the voltage in the bios from 1.8 v to 2.075 on the RAM which is suggested on this RAM it should be 2.0 - 2.1 .. still having blue screens, but only when i am playing games.. Never when i'm on the desktop or when i'm watching videos or listening to audio - could be the RAM, power supply, or the video card.. :l
Are you using onboard audio? If not, try removing your sound card and using the onboard audio.
Also, if you purchased new RAM and it still failed , you may have a bad slot. You could run memtest86+ with just one stick in the first slot. Then moving it to the second, third, and fourth to see if you get conflicting results.