HP Chromebooks run on ChromeOS. To put it a little bluntly, ChromeOS is kinda stinky so programmers don't really support it when making game stuff. You're out of luck my friend; best you stick to the web version.
Just press the Windows key and type in task manager. Open what comes up in the first slot. Make sure you're on the Processes tab and then look for Clangen. Right click and hit End Task. You're now a tech wizard! :D
