Now, click on the Start button and wait a while to finish.Make sure to keep all the default settings as it is.

Now, open Rufus to create bootable media for Windows 7.Now follow the following steps to clean-install Windows 7 using the ISO file, If you have your Windows 10 ISO File ready to update your system to Windows 10 Latest Update, all you have to do is boot from the disc or USB thumb drive to start the setup. There is a checkbox above the download button if you check that, your Windows 7 ISO will be downloaded via a web browser.So it may be the time to get an alternative for your software. also want to point out that 64-bit Windows (XP) was released over 9 years ago and Windows 7 is also close to it's 5th anniversary. It's basically a free Windows XP virtualisation offered by Microsoft.

Since you own the Ultimate edition of Windows 7 you are also eligible to run Windows XP mode. You may also try to 'run as administrator. Microsoft themselves even suggest to run the 32-bit version of their own product, Office, on a 64-bit Windows to prevent compatibility issues with other software.The one point where the emulation will fail is when your application requires to run in kernel mode as WoW64 itself is only executed in user mode.But getting back to the topic:Right-click properties on your application (executable), go to the compatibility tab and try running your application in e.g. That's how Chrome runs on a 64-bit installation, that's how Steam runs, that's how most games are (still) being run. Windows 7 shouldn't have any problems running 32-bit software on a 64-bit installation, it as a very capable 32-bit emulation system (WoW64). It may just be a problem with Windows 7 itself. shipped with your computer the license key is not valid for a 32-bit installation.As for your software not working I wouldn't even guarantee that switching to 32-bit Windows will solve this. This is only possible with a retail license. This step requires a full re-installation of Windows.2. As Hovsep said you cannot just switch from 64-bit to 32-bit Windows.

Windows 7 ultimate 64 bit