Hi guys, Yesterday I swaped the stock cooler of my radeon HD3870 for a zalman vf1000. Since then, the GC doesn't work anymore (even with the stock fan back) So after a night of check, test and prettty much everything, I'm pretty sure my GC is dead. What I want to know is what did I do wrong ? Do you think it could be a short circuit ? I'm a good mac user and I already did that on others cards (X1900 with an accelero for example.) I talked with xlryourmac and he can't see. I really want to find out a plausible explanation, because I'll probably buy another GC et wouldn't want to do the same mistake twice...(I know I'm crazy) so if someone really good at this can help... thanks I have a Macpro clovertown 2x3 Ghz - 12Gb Ram- Raptor Boot- Raid 3To- Multibridge Pro 2 Harold.