The cumulative updates are stored in a folder called "Update for Windows 7 (KB3125574)", but your files don't show anything like that, so I have no idea what that is you're showing or where you got it from.
Re your question about what you're seeing in Device Manager, you have several devices that you don't have installed drivers for. If you didn't get all the drivers you needed before reinstalling, you'll have to try to get them either from your hardware manufacturer or possibly a backup if you made one. I'm afraid not making a full system backup before making major system changes is like driving without insurance and a spare tire.
Good luck.