Well you are getting windows 8 correct? If you want windows 7 then install that ASAP.'
Then install
- Check if they installed any programs you dont want...uninstall asap.
- Check nvidia website for drivers and geforce experience
- steam
- origins
- fraps
Remember the plus for this is they provide full customer service so any questions you may have they should be able to help you along the way.
The most important thing is that Windows in updated and your Nvidia 760 drivers are up to date. GeForce experience should take care of that.
It is not as hard as noobs make it out to be.