my screen shows a file folder with a question mark?

Hi BradLJ,

The folder with a question mark screen means that your Mac doesn't know where to start up from. Try these steps:

1. Power on your Mac while holding down the Option key.
2. You should see one or more drives appear onscreen. Look for a drive named Macintosh HD (or whatever you named your startup disk).
3. Use the arrow keys to select that drive, then hold down the Control key while you hit Enter/Return. This tells your Mac that this should be the default startup volume.