Possible fan / awakening problem?

[tomster2300]

Today my Macbook's fans have whirled extremely loudly for about 10 seconds whenever I open the computer (awakening it from its sleep). The hard drive makes noise for roughly 2-3 seconds, then the fans kick in at high speed for another 10 seconds or so.

I no longer get the usual "whum-whum" sound it's supposed to make.

I don't think it's supposed to do this, because its never done it in the past. It was on the passenger seat of my car and fell longways to the floorboard last Tuesday when I made a sharp left turn downtown (it hit on the bottom left hand corner / left skinny side). Do you think this could be to blame?

I've rebooted the computer and everything is acting normally except for this horrible fan usage when reviving the system. Nothing but Safari is running right now and it's still doing it. It also does it on and off the power cord.

[Statica]

Not a MAC user, but as with any hardware issues like this .. I'd begin backing up any harddrive that makes any noise apart from the ordinary - especially one that suffered a fall. Look for tools to check the status of the physical surface of your hard drive... cos it sounds like you may have an imminent hardware failure.