I'm running windows XP home on my desktop. No problems until about a week ago, but now I get an error screen on bootup (BAD_POOL_CALLER, 0x000000C2) This happens every time, safe mode same thing. A friend of mine said it might be bad ram. I have a 512 and a 256 stick installed. I tried reseating them, cleaning them out, running just one at a time. Error still occurs no matter what I do. I've looked online and it seems like if it isn't bad ram then it's a bad driver. I didn't install anything new at the time the error first appeared that I can recall. At this point, we've pretty much hit the depth of my ability to fix this. How can I determine a) if it really is a driver issue and b) which driver(s) are to blame? Any advice/suggestions would be greatly appreciated. Thanks in advance.