Thanks for the response.
I will have to look into the memory model #s when I get home tonight.
Nope, no other problems with other games. The next most graphically intensive game would probably be WoW, which does not crash (black screen/lock up).
I had the same monitor issue (same monitor) with an old computer I previously built - so I'm leaning toward it being the monitor. I used a previous monitor I had and it would pick up a signal everytime.
Case is the sonata III by antec.
Yes, computer turns on immediately after turning it off (at least it will POST). Again, sometimes the monitor will not pick up a signal and will have to reboot anyways.
One side note (may be unrelated): When I have crashed in AoC, I will sometimes get an error during bootup that says Overclocking failed and give me options to change settings in the bios or to use default settings. As far as I know, the only thing that might be overlocked in the GPU and that is factory overclocked.