Magicthyse, I'm sorry to say it, but there's a very high chance that the DO has killed your cpu. Consider yourself lucky that it wasn't a more costly cpu, my DO3 killed my 1.4 T-Bird. I had installed it 20 times (because of trouble with the mobo, wouldn't boot unless you replaced the cpu each time, probably because the cpu already was chipped because of the DO3) and not had any problems except for the cpu getting a small crack in one corner but it worked fine on both a Asus A7V and MSI K7T Turbo Raid. Then I got a ECS K7S5A and had the problems mentioned above, then one day it wouldn't even boot. I got a new mobo because of all the whining I had heard about the mobo being bad but it still wouldn't post. got a new cpu and behold, it worked fine. So the DO3 had crushed my core, grr.
Now I'm using it as a paperwight like Dejo said.
Edit, oh yeah, I forgot to mention how loud that thing is. My current system with 3 46.5cfm 80mm fans is quite a bit less noisy compared to the old system with a DO3 and two more silent 80mm fans.