Hey there, from my experience, refurb laptops usually come with a 90 day warranty, with the option to add the Total Protection Plan warranty, or the Product Service Plan warranty
If you have the link to the product page I could advise you further. Or perhaps it is best to use the "Contact Us" link here, as it may be a mistake that the warranty is not availalbe to add on the site.
https://www-ssl.futureshop.ca/en-CA/secure/contact
Hope that helps
Chris
Indeed I find this odd that the ability to add warranty to this unit does not appear to be possible My recommendation is to use the contact link I have provided above to see if this is a mistake or not.
As far as being able to run D3, it appears your machine will be "ok". Meaning it will run, but on medium or lower settings. You can find the system requirements for Diablo 3 here.
I hope that information helps some
Chris
