Forgetting Windows password is the most annoying thing. Not only because you know you can reset your Windows password and recover access but also because you are going to need another pc to burn a Linux live CD / USB drive (if you don't have one).
Sometimes the simplest solutions are the best. If you feel sometimes the urge to setup an alarm that will notify you for just about anything, then you can create it very simple from your windows 7 environment, and without any extra software.
If you use Google Chrome a lot, then perhaps you will notice that Chrome is slowing down more and more. In this case you could simply clear the browser cache, history but sometimes this is not enough, you need to dig deeper.