I have a chromecast that doesn't cast sound when I cast the desktop, Sound come when I cast a tab but I need to cast the desktop sometime. Also I've notice that I can cast the sound if I have a headphone plugged in. I would like not to to keep a headphone plugged in. I have reset, reinstaller, unplugged, check that I am on the good wifi. I have tested other computer on the chromecast and the other ones work so the problem is my computer. Anybody have any idea what could be the problem? And what could be done.