Probably the power switch on the cube, if you have an adc display disconnect the switch on the cube and use the monitor to turn it on. It could also be the power switch on the monitor so try and disconnect that also. Richard On Aug 19, 2005, at 3:53 AM, Ken Johnson wrote: > My Cube has a 1.3 GHz Gigadesign processor and an NVidia GeForce 2 > video card (so more heat than stock) and uses a small 12-v fan > (blue led model) for cooling. It's been running that hardware > since May, and the shutdowns have only just started to occur (no > other changes beyond software). > > Any ideas?