prit87 :
side intake fans are generally installed to keep your gpu and your case cold....generally an intake in the front and one exhaust in the back of the case is necessary for good airflow but keeping a side fan is always helpful its not a must ...
It is for the gpu,and yes it's a big problem for me if i were you i would open the case and check the behind the mobo place to see how is the cable managment,see if the cable is good.What is your case? Also do you have warranty?