When sending your computer out for repair, you’re handing over everything on it, including your data. Options to secure a hard drive are limited.
If an ad claims that they will fix your computer for free, be skeptical. You know they are trying to make money, and besides you may be able to handle the problem yourself, for free.
It’s useful to have a set of tools ready to be used for debugging, diagnosing, and resolving system problems of various sorts. This is called a toolkit. I’ll show you mine.
There are a few things to take a look at with your system if your computer locks up and won’t boot.