It is some Active X Java component that claims to be easily uninstalled after use but doesn't say how to uninstall.
Probably in Control Panel under Programs in Windows 7/8 (or under Add/Remove Programs in XP).
Or use the "View Requirements" radio button at the bottom of the
http://www.systemrequirementslab.com/cyri page and don't bother with their scanning option at all.
Or instead of using a site that wants to scan your computer, you could just look up the specs for the game at some site like
http://www.game-debate.com/Or do a Google search -
"whatever-the-game-is" requirements site:game-debate.com
for example, google for -
sherlock crimes requirements site:steampowered.com
It's not like a site that scans your computer would have any better info than a site that just tells you the game specs.
If you don't know your computer specs, you can use speccy
http://www.piriform.com/speccyor the Belarc Advisor
http://www.belarc.com/free_download.html