Fan/Heatsink: Choppy Sound

[Jakeworld]

Recently I'd been cleaning out my computer, and during that time i plugged in some extra RAM. When I turned the system on, the heatsink was makin a odd choppy sound, although I assured that everything was plugged in and situated correctly. It makes the sound for about a minute and a half, then it stops and runs perfectly normal. Any ideas or suggestions on how to make it stop...it only does this during the boot sequence.

 

[Triple6]

Open up the case and check the fan - there may be something rubbing against the fan or it may not be seated properly. You can leave the side cover off to watch the fan. Also monitor the temp with Speedfan: http://www.almico.com/speedfan.php

Whenever adding memory its always a good idea to test it thoroughly: http://oca.microsoft.com/en/windiag.asp