Firefox keeps crashing when I click on a video and I've lost sound about 2 weeks ago. I've looked at everything I can find (Don't have a lot of experience with what to look for). I have considered going back to last Firefox download but don't know if that would help or how to do. I did also reinstall Firefox without removing this on that I have all set up. I've gone back to the original Firefox (using now) since it was not deleted. Hopefully, I didn't make things worse. Please help! Thank you!