Code not utf8 according to w3

Line 449
W3 throws me a document cannot be checked error because of the code on line 449 cannot be interpreted as utf-8.
Was working before i updated more of the page in the last few days.
Anyone able to help?

www.techagesite.com/new_page_9.htm

 

This is the line:

        <img border="2" src="Thumbs/Pioneer-music-wallpapers_small.jpg" width="100" height="56" alt="Pioneer music wallpapers hd abstract desktop 1920�1200"></a><a href=".jpg"></a>

Code (markup):

Remove the weird character in the alt parameter.

 

thanks
that was weird should have been an x but was a mini x