MasterChef420 :
WyomingKnott :
All other issues aside, you can't install 64-bit over 32-bit as an upgrade. You have to either wipe the 32-bit instance and start over with 64-bit, or set it up as a dual-boot. In the latter case, you will have to re-install and re-configure everything you had set up in 32-bit in the new 64-bit instance.
I also downloaded 8.1 pro from microsoft website, however i installed it finding out it is 32bit, what could i do to get64bit version i'm not willing to buy another copy!
well same happened with me i downloaded win 8.1
when i was running a 32 bit os. and installed the win 8.1 it came out to a 32 bit os. then i contacted Microsoft they told
its because i downloaded win 8.1 when i was using a 32 bit version. so they told the solution to that.
solution:
1.) download another copy in win 64 bit os. not again download in win 8.1 32 bit which u have installed.
2.) its my solution not by Microsoft, you can install a 64 bit trial version win 7 then try to download windows 8,1
well i am not sure but i guess it will work as Microsoft help told while downloading its check which os is running so its only way i got. i not have any one near who has 64 bit windows os.