Come into contact with a X3500 M5 old server, we may not be able to start now, whether in the F1 or F12 will stuck, have something stuck in 10 seconds, sometimes stuck in more than 40 seconds, always can't get into! Has brought out the array CARDS, and replacing the memory, is still the same! No error lights! O great god under the analysis of problems, and possible solutions. Be very grateful!