Volcano won't erupt !

Just purchased a volcano 7+ to cure an overheating Athlon XP 2100 which crashes my system at 60 C. Took out old CPU fan, replaced with nice big noisy volcano, but system hangs in windows start screen when I boot up.
When I replaced the old fan, the system starts Ok.
Any ideas?? My only thought is that the standard 300w power supply is not man enough for it, causing voltage drop?
Any bright ideas?
Ken

  woodchip 23:22 26 Feb 03

Could be

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