It was working fine up until a few days ago. No when I open up the Adobe Premiere Elements 10 launcher, and try selecting "New Project" or "Open Project", it will show the loading bar go for a few seconds, then stop, with nothing opening. Not sure what happened that caused this, and since it came pre-installed on my laptop, I'm not sure where I would find the serial key to complete a re-install.
You could try System Restore.
This is a very old program on a new or freshly upgraded operating system. I'd definitely recommend a reinstall.
If you've previously registered the program, you can find see the serial number by going to the Adobe web site and clicking on Manage Account -- then clicking Plans & Products and selecting the option to View Your Products.
If you're already logged into Adobe, you can try just clicking this link.