If you get constant errors and crashes on your computer you probably have the blue screen of death error.  It does not have to happen if you just scan your computer regularly.  If you did not know, there are free scans you can run on your computer.  If you do it frequently it is going to bring up the list of errors, and if you fix the errors it won’t happen.  However, don’t let it pile up, because if your computer crashes you are going to lose all the data, and that data often cannot be recovered causing you a lot of headache.