I took the heatsink off my 3.4GHz P4 today for the first time, and once I replaced it, the cooling fan runs at a ridiculous speed as soon as any sort of moderate load is put on the CPU. I don't think it's overheating, as the fan kicks in as soon as you up the load, suggesting its speed is (at least partially) linked to CPU usage. I'm just wanting some reassurance that this is only because i 'broke' the thermal paste and i haven't done anything else without knowing! The heatsink is fully secured over the processor. I have some arctic silver 5 on order thankfully, so hopefully that should fix it...
BTW It has a decent fan on the heatsink which i've only ever heard run up to high speed previously when the system starts up and tests the revvs.
Any advice much appreciated!