Maybe but don't trust this. Make sure you are getting a noticeable air flow out of the top vent or you will cook it. You should be able to feel it but you can also put a light piece of tissue paper on top and see if it rises. If not there's probably not a good connection at the DC-DC board connector. The connector has to "snap" or "click" in. On Saturday, November 30, 2002, at 04:14 AM, Sergei Zak wrote: > Loopie HK was saying: > >> Hello, >> >> A friend has recently upgraded his cube with the 1Ghz Powerlogix >> upgrade kit. But the fan doesn't come on? Is this the norm? I would >> suspect the fan should come on as soon as the computer is powered on. >> >> thanks >> -charles > It's so quiet you can't hear it. Try to check if it spins with the core > exposed.