Hello all I have one Amilo PI 2515,received with damaged cpu fan. I replace fan(not Fujitsu original one),and clean old thermal paste and put new AS5. Since I encountered problems and fan was not starting (maybe because was not need,cpu is not warm too much) I take power for fan from usb so now fan is always on and at max rpm. I leave two wires still connected to fan socket (black-gnd,yellow-rpm sensor) only red is connected to +5V from usb socket. Problem is that always notebook power off at very some time. I did some test,with a little human error about timing. From powering on until shut down is around 3 minutes and 16-17 seconds in any cases. Power on enter bios: 3:17.8 -shutdown 3:17.6 -shutdown 3:17.0 -shutdown Power on run memtest from cd 3:16.6 -shutdown 3:17.9 -shutdown 3:16.2 -shutdown Power on boot linux 3:17.9 -shut down 3:17.5 -shut down 3:17.1 -shut down I have already loaded defaults from bios,upgraded bios to newest version from support leave motherboard without bios backup battery for some time but problem persist. I can't measure cpu temp but is cool enough in my opinion and compared to another notebook seems lower than 60 celsius. Anybody have some ideas what can I do next? Thanks.