Whenever g Google Chrome is open my HDD spins really fast
This may be because Chrome uses the hard-drive to cache everything- which seems to cause problems with installing it on a thumb drive (slow write speeds) and annoyingly LOUD harddrives!
This has been reported to Google in these issues
http://code.google.com/p/chromium/issues/detail?id=19510
http://code.google.com/p/chromium/issues/detail?id=84913
A workaround would be to start the brower in Private Browsing (In Cognito?) mode, which doesn't cache anything. if you can live without browser history that is :). See if the harddrive sounds better in this mode