Okay if it still hasn't offered it to you, then download the Media Creation Tool to your desktop from these locations:This is what it shows on my updates Bob...Like i said if i click on reserve nowt happens at all. Maybe i already reserved it and forgot, dunno, can`t remember !
For 32bit OS http://go.microsoft.com/fwlink/?LinkId=616935
For 64bit OS http://go.microsoft.com/fwlink/?LinkId=616936
you will probably need the 64bit one, once downloaded then run it, and choose the Upgrade this PC now option BUT you should really create a DVD just in case you need to reinstall it again in the future, if you haven't got any blank DVDs then you would need a DVD-R from your local reseller - I'm assuming your laptop has a DVD writer/player which most of them do these days.