it is .. but might have driver issue after upgrade.. cause windows 8.1 wont keep personal files or drivers..
but if you want to upgrade just stick the dvd into your dvd drive and follow the prompts.. it doesn't take long.. about 30 minutes depending on your system.. after upgrade go to your laptop support page to download drivers and programs
on a side note the windows 8.1 pro is a full edition not just an upgrade hence the loss of personal programs and files so back your stuff up before hand
if you choose to upgrade install from desktop of windows 7
if you want clean install boot to dvd and choose full clean installation
someone else might have a better knowledge on how to post the steps so don't take my word for it
but if you want to upgrade just stick the dvd into your dvd drive and follow the prompts.. it doesn't take long.. about 30 minutes depending on your system.. after upgrade go to your laptop support page to download drivers and programs
on a side note the windows 8.1 pro is a full edition not just an upgrade hence the loss of personal programs and files so back your stuff up before hand
if you choose to upgrade install from desktop of windows 7
if you want clean install boot to dvd and choose full clean installation
someone else might have a better knowledge on how to post the steps so don't take my word for it