I recently had someone explain to me that he was told he fried a laptop's hard disk by putting it in an external drive enclosure that was not rated to supply sufficient current. (Apparently the disk nominally needed 1000 mA and the power supply was only rated for 500 mA.)
I'm having trouble imagining the chain of events that would result in that letting out some component's magic smoke.
Seems to me that if the drive tried to draw too much current, the power supply's output voltage would sag.
Are there any common modes where an undercurrent results in a fried circuit? My imagination isn't sufficient to come up with any.