how do i authorize my computer at home since i de authorized all of them

Hello Tony,

Welcome to Apple Support Communities.

It sounds like you're unable to authorize your computer with iTunes on your PC. If you haven't already, take a look at the article below and use it as a guide for authorizing your computer.

Authorize your computer in iTunes - Apple Support

If iTunes repeatedly prompts you to authorize the computer, try following along with the troubleshooting tips in the article below.

If iTunes repeatedly prompts you to authorize your computer - Apple Support

Cheers.