Hello, I'm Tim and have over 15 years of experience with eBay, Google, and the Department of Defense. I'm here to do the best I can to assist you with your problem. If remote access is needed, I will remote in, and call you, as well as provide a free tune-up. Also, follow-ups are always free if more is needed.
Have you set the Chromecast back to factory settings? I need to do it to mine every 3 months or so....
Yes, you can reset it by holding the button on it for about 15 seconds, and then reset it up.
Is this the one you have? https://us-i5.tb.wal.co/asr/8289d1b0-b630-46bc-a33e-f0e5b347ff70_1.f06710f6452b38a99f478c87c8b87936.jpeg?odnHeight=450&odnWidth=450&odnBg=FFFFFF
Its a really small button, its by the HDMI port on the model i posted above, the round one version.
I Know....i sent you a link asking you to confirm, its the same one.
Ok, the button is next to the HDMI output on it....
Follow the instructions on the screen - it should say to go to a set up page on your PC or tablet.