Okay, I filled in as much as I could semi-understand.
I don't know what it means if my drivers are up to date, sorry.
Also, I've realized that its not just files from the camera that aren't playing. No video clips/files will work. Such as ones received in e-mail, etc. Windows Media Center is completely useless right now.
It all worked before Windows 7, however my dad went ahead and tried to download it himself (improperly) and now I'm stuck trying to fix everything. (This is my parent's computer)