I've only ever had it once personally, I looked into how to fix it and decided it was much much simpler to back up my HDD and start again.
I know of 2 other mates who had the same thing and decided on the same solution.
If a IT tech looked at it, fair fucks they would probably fix it, I'm not an IT tech though and for what one would cost and how long they would have the pc, would it be worth ut?