Do you only have 32bit Windows?
Your license for your Windows is good for either the x86 or the x64 versions. It must be the same tier though (i.e. home x86 = home x64, pro x86 = pro x64)
**OEM copies/Lics don't count for this I don't think.
Microsoft also offers a trial version of Windows 8.1 for 90 days. It's meant for IT use but anyone can sign up (last time I did it was when 8 was in RC... but I'm pretty sure that's still the case).
http://technet.microsoft.com/en-us/evalcenter/hh699156.aspx
The Windows ISO's (any version you want) are freely available on the internet and 100% legal to download and install. I believe those have 30 day "trials" before activation is required.
microsoft's own forum... hosted by DigitalRiver a MS partner... you can't get more legit than that.
I am using a 64 bit Windows and my computer can run just about any game. Games like Battlefield 4 were the only games I can not run on ultra settings, however it was still able to run it with exceptional speeds.
Contact EA.
http://help.ea.com/en/contact-us/new/
Select it as a Billing/Purchasing issue.
They should be able to take care of it for you.
