Than the sound of cpu fan grinding against heatsink. Not only does it sound awful, it also means buying a new cooling setup, and to be on the safe side using an older slower computer that doesn't have all my music on it (while I do have that on an external HD, it's formatted as NTFS so, iirc, win98 can't read it). At least it made itself known to me noisily, rather than just dying and allowing my mobo to melt.

As an aside, the lack of great april fools' gags everywhere is very disappointing

[edit - after god knows how much poking and shoving, because of socket A mobos having the most ridiculous system of attaching heatsinks, and fearing that i'd bricked the system at least three times, it seems to have worked, thank god]