Ronmamita, which computer are you using? Please post brand, model, type etc.
Mason could be right, and if so it's just a matter of replacing the network
card.
Since there are many other options to leave Microsoft than Trisquel, I
imagine that you approve with the free software philosophy. If that is the
case, I would like to lead you attention to libreboot. You may already know
this, but if not, please be aware, that before a computer starts the
operating system, another piece of software is run. On most computers this is
proprietary software, i.e. untrustworthy as Windows, iOX etc.
On a number of computers this software can be replaced with free software.
You can read more here: libreboot.org. Not all is readable for non-techies
(including myself), but you can read more other places. If you possess the
knowledge and/or patience and will - and for some machines the right
equipment - you can replace it yourself.
These companies can help you with 100% free computers:
US:
http://www.libiquity.com/
Europe:
https://www.minifree.org (England)
https://store.vikings.net/libre-friendly-hardware (Germany)
https://tehnoetic.com/ (aka. Technoethic, Romania - they have the largest
variety, including phones)
(To my knowledge, computers from ThinPenguin are not 100% free, though all
their accessories are)