Strange ticks after disconnecting a fan

Not sure if this goes into /prog/ or /g/, but whatever.

Ever since I disconnected a fan from my computer, the computer has been making pairs of strange, regular, ticks (the type it makes when it works) every 2 seconds or so. I know for a fact its not overheating.

What could be the reason?

>>3
I thought the standard was m.i.o.u

>>1
back to /g/, please