So, I'm fairly new to Firefox, as I was a Chrome user, but recently because Chrome is broken for me for some reason, I've switched to Firefox.
Earlier today, there was a rather bad thunderstorm and our power flickered, but my computer managed to stay on... Only for some reason flash seems to be buggy. Flash videos aren't really playing smoothely and I get absolutely zero sound. I get sound through other games and computer sounds, but nothing through flash.
How can I fix this?
To help troubleshoot we'll need the following system information:
Flash Player version - http://adobe.ly/wNzNAu
Web Page URL
Steps to reproduce
When reporting issues with video or audio, it's also helpful to get your system hardware and driver details. Instructions for finding this information can be found here:
Windows - http://adobe.ly/KShBWi
Mac - http://adobe.ly/16Odlzb
Finally, sometimes video and audio problems are caused at a lower level and not directly related to Flash Player. I recommend trying both of the links below to see how they perform. If the problem exists with both, then Flash Player is most likely not the culprit as the HTML5 video link does not use Flash Player when playing. You can verify the use of HTML5 by right clicking the HTML5 video and looking for the words "About HTML5" at the bottom of the context menu.
HTML5 video - http://bit.ly/ahzL63
Non-HTML5 video - http://bit.ly/cqNb3w
Also, first things first, if you haven't done so already, power the machine down completely. Let it sit for 30 seconds or so to let all of the individual internal hardware components fully discharge, then power it back on. If any of the hardware on the machine is simply freaked out (as opposed to damaged), allowing the system to fully discharge should get it back to a good baseline.
Since the problem coincided with a power anomaly (which probably included a surge as the power distribution network switched you from a dead feed to a working one somewhere out at the poles), hardware seems like the most likely answer, and if you can't be 100% sure that the machine is in a good state when you start troubleshooting, it's hard to draw any solid inferences from the behavior that you're seeing.