Microsoft allows us to change Windows 7 language only for the expensive Windows 7 Ultimate / Enterprise editions. However, there is an easy trick that allows us to change Windows 7 language in Windows 7 Home Premium and Windows 7 Professional, using Microsoft's language files and the free Vistalizator app.
When we download Windows 7 through the Digital River ISOs, we might not find an ISO on our preferred language. With this method, though, we can change Windows 7 language in just a few minutes.
Do a full Windows update
Before we begin the procedure to change Windows 7 Language, it's essential that we have installed all Windows updates. There are a few updates that, if missing, will block us from changing language.
So, if we have a new installation, or an old installation where we didn't bother with updating, we must go to Windows update...
...and click on "Check for updates". This check could take a few minutes, especially if we've never checked for updates before.
We should select all of the updates. Not just the "important"...
...but the "optional" too.
Depending on the Windows' Version, and the last time we did an update, the complete download could very well exceed half a gigabyte.
Also, after we install the first batch of updates and reboot, we 're not necessarily done with Windows update.
We should check again (clicking "Check for updates"), because we will often find more updates to install.
And after that, there could even be some more...
We might not need every single Windows update to change the Windows 7 language. In any case, though, having our Windows installation fully updated is essential for our system's security and well-being. And, contrary to popular opinion, Windows Update doesn't slow Windows down.
So, we shouldn't quit until we installed every single update.
Download Vistalizator and our preferred language
The software that allows us to change Windows 7 Language is called Vistalizator, and we will find it at http://www.froggie.sk/download.html.
It is a portable program that doesn't need installation. And since we just downloaded the newest version, there is no need to check for updates.
After all, changing Windows 7 Language is often a one-time deal.
It's important to note our Windows version (32 or 64-bit), and whether it has SP1 or not.
Back on the Vistalizator download page, we select the proper link (32-bit Windows 7 SP1 for the example).
There, we download the language of our choice.
Languages with three stars are only 80% translated from Microsoft.
For the example, we will change the Windows 7 language from English to Spanish.
Those links point to Microsoft's servers, so we know they are legitimate.
Install and change Windows 7 Language
Even though the language file we downloaded is an application file, we don't open it.
What we do is, on Vistalizator, click on the "Add languages" button and select the file in the download folder.
Vistalizator will check the file integrity, and prompt us to install the language of our choice.
The program claims it might take up to 20 minutes, but it will usually take much less, around three minutes or so.
After that, it will ask us to change the Windows 7 Language. We click "Yes".
The current Vistalizator version 2.63 will always display an error. Don't worry, it's not a problem.
We just need to download this particular Windows update, by clicking on the link. Yes, even after we have installed hundreds of megabytes of updates.
As with the language files, this is an official package from Microsoft.
We open the file and install it...
...and after that we return to Vistalizator, select the language of our choice and click on "Change language".
We will still get the error...
...but this time we also get a message that "No Windows update is necessary to be installed".
After that, we just need to close the program. It will prompt us to restart.
The language has changed even at boot level.
And we are done. Se habla Español.
If we want to revert to English Windows, we just fire up Vistalizator, choose English and click on "Change language".
Did you have any problem changing the Windows 7 language?
Most problems with Vistalizator are solved by manually installing the Windows updates the program suggests.
However, if you've done that, and you still can't change the Windows 7 language, leave us a comment with the exact error message you are getting.