Hello The Great Bear,
Thanks for posting your question. I understand you're not hearing any sound from iTunes on your PC.
To double-check, are you having similar issues with audio from other sources on your PC? This would help to narrow things down.
You might also double-check your volume levels: Adjust the volume in iTunes on PC
Restarting your PC, and disconnecting any headphones or other external audio output devices, might help also.
If none of the above seems to help, removing and then reinstalling iTunes would be your next best step. Check out this link for guidance, and be sure to follow these steps in the exact order from the resource: Remove and reinstall iTunes and related software components for Windows 7 and later
Best wishes.