Hi there! One of our CPUs and monitor gave up most of the ghost. I monitor is hosed, I tested so that is no biggie... But the CPU says that the CPU fan is not running, press F2 to continue boot or it will shut down in 5 seconds. If I press F2, it boots fine. I have a new HD in the CPU because my boss REALLY needed his computer and I had a spare. So he is set, but I am still dealing with his old one. I have checked the fans on the PS and the MB. BOTH are working. So am I missing something? It is a HP pc 864n Media center. Thanks!