Originally Posted by Stanko1987
you can download a free trial software for recovering your windows product key, i hope this is a relevent help unlike the above replies. http://www.adranix.co.uk/site/
One thing I found with a system information tool was one number seen in the information that couldn't be used to see Windows activated when tested later. In fact the product key for one of the RCs won't work when I wasn't at the machine when the prompt for the number was seen. The installer went on without it requiring a second number be used when going back for that.
Here's another good one is the upgrade option and entering the same product key that did work and finding a new one again was needed!
I've seen this with pc games as well as other softwares including the latest Windows 7 downloads.