There are several signs to take note as you access your computer daily. This need not necessarily be a conscious act of scrutiny. But as you work around with your machine and stumble upon a hiccup, it may be advisable to check your disks and files for errors to minimize the chances of further extensive damage. Alike your physical health, always perform a checkup when you sense something dubious. Petter Smith http://www.hdrconline.com/