Another common problem I see with (Windows) computers is that most people don’t update them. Microsoft has an online tool called Windows Updates which automatically determines which updates your computer needs and downloads/installs them for you. All you have to do is go to the site regularly (at least once a month), follow the on-screen prompts, and reboot when installation is complete. (Newer versions of Windows have an automatic updates option which is good too.)

Note: If you’ve never gone to the Windows Updates site before, there will be many updates waiting. After you download and install them, reboot your computer and return to the site – there may be one or two others that had “prerequisites” which were installed during the first visit.