Since laptops are used as mobile computing devices they are much more susceptible to being damaged or being stolen. This is an unfortunate reality of using new and used laptops under 100 dollars and they are simply not going to be quite as secure from being misplaced accidentally either.
There are still many very useful ways to provide some added security to your laptop computer. One easy to manage system to use to help protect the files on your laptop is to use file encryption. This actually happens at the operating system level giving you the opportunity to protect the important files on your computer. When you setup this form of laptop file encryption on your hard drive you will be able to configure it so that only you will be able to read the contents of the files providing you yet another layer of security.