I cannot admit that I haven't tried that before with first mobo because it booted but nothing worked and tried every memory slot one by one etc. With this new mobo I didin't do anything because I wasted so many hours with first mobo trying to get that work.
Edit: this works with 4 pin...
I have to give up with this too and get a new mobo. I wasted hours and hours without results. Kinda funny.. :D Good thing is that I'm not only one who had problems with this setup.
That have happened here too if I understood you right. Sometimes at first gpu cooler went to 4000 rpm and when pressed F2 for example rpm went down and booted (almost) normally. Thanks, have to test assembling outside the case tomorrow because it's late night and I'm getting tired for this. :)
I had to register because I have exactly the same problem with same configuration. My English is far from good but I'll try and hope you'll understand. I've built dozens of PCs from Pentium MMX to newest ones with 99,9 % successful rate and this is the first one which is going to tear up my ***...