Home computers are usually supplied either without Microsoft Office or with a version of Office that doesn't include PowerPoint. So the obvious question for us to ask is 'Have you actually got PowerPoint on your computer?'
If you've not got PowerPoint on your computer you can view and edit the presentation using Microsoft's free PowerPoint Online facility:
https://office.live.com/start/PowerPoint.aspx
Alternatively you can install a free office suite that's capable of handling Microsoft PowerPoint formats. The most popular one is Apache OpenOffice, where Impress is the program you use in place of PowerPoint:
https://office.live.com/start/PowerPoint.aspx
If you actually have got PowerPoint on your computer, please tell us about any error messages you see when trying to open the presentation. (Alternatively, just use one of the solutions above anyway).