Windows Product Key Retriever 2.50 Read More At: Https://tr.im/1rjzy

On the download page, use the "Report" button to send the message. Thanks.

 

Looks like it is at version 3 and it is portable
Source: http://www.softpedia.com/get/System/System-Info/Windows-Product-Key-Retriever.shtml

I downloaded it on a 32 bit version of Win 7. I'll move over to my 64 bit version and see if it works. BRB

 

It is portable - no installation required. Run the exe from the unzipped file on your desktop. It requires .NET 4.0.3 to run. (I tried to run it on the 32 bit computer and got a popup).
It found the key but it isn't the key that is on the sticker. It is the one Acer used when they mass-installed Windows 7 on all the computers.

I then downloaded this
http://www.majorgeeks.com/files/details/magical_jelly_bean_keyfinder.html
It reported the same key that the Windows Product Key Retriever found.
However, Magical Jelly Bean is more useful. It also found my key to Malwarebytes Pro and Win Patrol. If you want to find keys for purcahsed software as well as Windows, this is more useful.