Did you purchase the H100i NEW?
Did you read the manual?
Did you do any research on the internet?
Suffice to say, if you leave ANY of the 4-pin PWM wires ''disconnected'', the implications to the functionality of the cooler are as follows :
1.) NO FANS --> NO AIRFLOW --> NO COOLING ==> CATASTROPHIC FAILURE OVERHEATED COOLANT
2.) NO PUMP --> NO COOLANT FLOW ==> CATASTROPHIC FAILURE OF CPU HEAT EXCHANGER
So,
READ THE INSTALLATION INSTRUCTIONS;
HOOK IT UP, RIGHT; and
INSTALL CORSAIR MONITORING SOFTWARE (or use Motherboard software)
TEST IT FOR COMPLETE FUNCTIONALITY
(or you could wreck more than just the cooler!!)
GOOGLE: ''How to install the Hydro Series H100i CPU Cooler - Corsair''