Now I’m working for this company for about three years and I still discover new things I wish I would have found a long time ago. If you’re the typical PC end user that is frustrated by your PCs behavior once again, there is a one-stop shop for most of your troubles: http://support.microsoft.com/fixit/ (if you can’t remember this, http://www.microsoft.com/fixit/ also works.)
Just for fun: go to http://support.microsoft.com/fixit/ and click on the “top solutions” button in the upper left, then scroll down. There things like Fix power consumption problems and extend the laptop battery life or Fix Windows system performance problems on slow Windows computers and even the classic “windows won’t print”: Printing problems and printing errors