Ethernet vs wireless

[compnovice_36]

Hello,my ethernet controller has a yellow question mark next to it. My wireless is not showing up, not working. Does the ethernet controller need to work for the wireless to work, I have a toshiba a215- s4697

 

[Emerald]

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=1757694&rpn=PSAEGU&modelFilter=A215-S4697&selCategory=2756709&selFamily=1073768663