Upgrading from Windows 7 to 8 with PT12

Hi, I was previously using PT Express 10.3.4 with Windows 7... My Laptop crashed and I wanted to upgrade my laptops so I got a new HP with windows 8.1... PT express 10.3.4 isn't capable with Windows 8.1 so I need to know what to do from here without digging deep into my pockets... not having pro tools is putting my life out of whack ha!