I purchased a used MacPro3,1 with Mavericks preinstalled. I'm a proficient Windows user and was hoping to start looking at converting to Macs. However, wanted to start playing with iMovie before moving to Final Cut Pro and iMovie is not in the apps. The prior owner must have deleted it. I have an Apple ID and all but can't reinstall Mavericks via the internet and have no discs. It says the service is temporarily unavailable. Is there a way to repair Mavericks to include all original software? I'm about to give up and return to Windows.