When you work on your computer ,especially Windows OS, you realize that OS isn’t running in the same speed that it used to run when you first time used it. It’s much slower on startup, much error message appear,and takes time to start or run applic…

When you work on your computer ,especially Windows OS, you realize that OS isn’t running in the same speed that it used to run when you first time used it. It’s much slower on startup, much error message appear,and takes time to start or run applic…