Hi hman123467, welcome to BleepingComputer
As mentionned above by Digital_Veil, you'll have to do a complete reinstallation of Windows to switch from 32-bits to 64-bits. These are two completely different architecture, and therefore it cannot be achieved by a simple "upgrade", you'll have to format the partition containing your current Windows installation and reinstall it from scratch. Fear not, it's easier to do then it looks like
The first thing you want to do is to back-up all your data on an external storage device or online, so you can grab them back on the new installation. After that, you want to grab your Windows product key so you can use it to activate your new Windows. If you don't have it with you physically, you can use ProduKey
by NirSoft to grab the current product key in use on your Windows system. From there, what you'll need to do is to create a bootable installation media with the .iso of your current installed edition of Windows, except one that is 64-bits, not 32-bits. If you install another edition of Windows 7 than the one you have now, your product key will not work. Therefore, let's check which edition you have by clicking on the Windows Start Menu
, right-click on Computer
and select Properties
. Your Windows edition name should be displayed in the System
window that will open. Can you post it for us?