Start
My Computer
Local disk (C:)
A buch of files and folder should pop up, this is where it gets interesting.
Move your cursor over a file or folder, use your right mouse button to click on it.
A small pop-up window will pop up, at the bottom it will say Properties, click on that
A new window should pop up, Click on the button that says adavnced.
Yet another new window should pop up. At the bottom there should be a check box that says "encrypt contents to secure data", click the check box, a check should apear in it.
Click OK
It will close that window and bring you back to the one you were at before. In thaqt window, click apply changes.
A new window will pop up, It will confirm with you that you want to encrypt the folder, make sure the check box says encypt folder and sub-folders
Click ok
It may take a few secounds to a few hours to encrypt, epnding on file size and computer speed, but most folders will be instant.
The apply button will turn grey, click ok on the left.
That should do it, do it to all folders in the (C:) drive.
If you need any extra help, tell me.