Thore Hult
On what computer operating system is your Premiere Elements 12 working on? Have you updated it from 12 to 12.1 Update using an opened project's Help Menu/Update. If not, please do so.
For your immediate problem.
What is the model/settings for the JVC camera that recorded you video. I want to get at the properties of your source video including the file extension.
Since you are getting video, but no audio, please download and install the free codec utility named GSpot to see what is shows
for your Audio Name and Status.
http://www.headbands.com/gspot/
The other properties of the file there would also be of interest.
When you import your source file into the project, do you see any "conforming" activity going in a progress bar at the bottom right corner of the workspace?
If so, do you wait for it to complete before you move forward in the project?
Can you get sound in any of your Premiere Elements projects with this current JVC file or other?
Can we assume that your troubleshooting has included checking
a. Volume control within the project
b. Edit Menu/Preferences/Audio Hardware ASIO
Let us start here and then we can decide what next if necessary.
Thanks.
ATR