I was traveling several weeks ago and all of a sudden my speakers stopped working (around the same time I could no longer download Windows updates -- Broni worked with me on that and I am malware free and currently updated). I hooked up some external speakers and they don't work either. I don't even get the Windows sound when I boot up. I checked devices looking for that yellow triangle with the black exclamation point but there is no such thing. Any suggestions on how I can find out what is wrong? Thank you.