I recently bought an HP Proliant G6 SE326M1 from a very well reviewed seller on Ebay. If this problem persists they are willing to cover all costs but as per usual time is of the essence and waiting 2 weeks for a turn around is not really the most ideal solution. Anyway this server is reading an error on fan headers 3 and 4. There are 8 fans in total on splitters on headers 1,2,5,6. The server refuses to boot past a certain point as the system requires 5 fans to boot. Headers 3 and 4 even when populated with fans still read a critical fan error. I was wondering if anyone had a solution that didn't require a return. I have tried everything i know to do including moving the jumper to every position of reset. I have also simplified the server as much as possible by removing all RAM but one stick and the same with the CPU's.