Your PC is looking for the SSD in the 3 gb port when its not there so it gets confused. Try changing the port in the bios screen or if that doesn't work, reset the cmos
I have an h80i and its really nice! It's expensive but its worth it. The program that comes with it is annoying at times but overall i'd give the h80i a 9 out of 10
Did you connect all the correct cables? Such as the 24 pin or the 4 + 4 pin connector? Other possibilities are the CPU fan is not plugged in or the RAM is not placed in correctly into the right slots
Believe it or not, when I bought my ram 2 years ago, I was able to get 2 x 4 GB's for $50 on regular price (no sale or discount).... They are the corsair vengeance, they retail for like $95 now