I have a K9MM-V I bought several months ago. I held off bulding it because I\ndidn't need it at the time, got distracted - plus the pad of transfer paste\non the big Thermaltake R1 TR2 had shards of the broken plastic 'protecter'\nbroken in shipping so it needed to be cleaned off and the Arctic Silver\nreapplied.\n\nIt's a basic build, a Athon 3500, Thermaltake, memory and K9MM so far. Thing\nis, when I started it up, neither the CPU and case fan ran. I'm thinking\ntwo possibilities. Either there is a temperature point it's supposed to\nreach before the fans run, possible since it's newer than what I've built\nbefore (I believe in staying behind the curve, mainly for cost) but I'm\nthinking damage might result while I look for temp. settings in the BIOS.\nThe other thought is, well, I'm using this 500W Ultra XConnect PSU I bought\nat the time, mainly for the ropey PS cables. The mobo's main is a 20 pin\nfrom the Ultra, 24 on the MSI K9MM. Research online said it didn't matter\nunless you were using high power like dual SLI's. But I might be skipping\npower to things like the fans if those four pins are open. I can buy a 20 to\n24 pin adapter if that's the problem.\nAny input would be appreciated.