Tracks do not play/freeze

I was editing WAV files just fine when suddenly, the track did not resume after a pause. I have tried on multiple tracks. I have closed out all tracks and opened only one.
I will get the little green arrow above the cursor line, but nothing else happens. The bottom left saying “Playing” but it isn’t. The line on the track never moves, no sound comes out, and the green bar showing the playback volume does not show any audio is being produced. The program does seem to think it’s playing because it locks out all the typical effects and things that are locked when a track is playing. I have tried running an MP3 file and it does the same thing. I have tried letting it just sit on “playing” to see if there’s just a delay in the audio starting, but after 10+ minutes, still nothing actually played.
I have checked for updates and there are none. I have tried with headphones and without. I have shut down and restarted my computer.

Please help! I’m an audiobook narrator with deadlines!