No Audio or Amplitude

I have been using Audacity for years but recently after updating to the latest version when I open or import a file there is no amplitude and therefore no sound. I have tried several different files with the same results. The files play on all other media players on my computer. I have tried uninstalling and reinstalling Audacity but nothing seems to help. I am using Windows 7 64 bit with latest version of audacity.

Did you download Audacity from here:

Did you download the
“Audacity 2.0.5 installer (.exe file, 21.2 MB, including help files)”
or the
“Audacity 2.0.5 zip file (8.2 MB) for Windows 2000/XP/Vista/Windows 7/Windows 8”

Look at Edit > Preferences: Directories. Make sure the Audacity temporary directory has several GB of space and that you have permission to write to that location.

If you need to reinstall Audacity, ensure you enable “Reset Preferences” halfway through the installer.