$200 sounds about right for working on laptops, the tech has to figure out how to open the case and access the fan(s) to replace them. Usually, though, if it is the hard drive, those are usually in a little sled on the side of the laptop that's fairly easy to remove.

My guess, though, if it's cutting out, that could be a heat related issue (CPU or power supply is getting too hot).

Wish I could provide more help, but I can't hear the symptoms myself.

Good Luck!

TeddyTiger