Please open a terminal (Ctrl-Alt-T) and post back the outputs of -
While posting the outputs, please use 'Code' tags. It preserves the output's formatting and makes the post cleaner, compact and more readable. To see a quick 'HowTo' with screenshots, please follow the "Use Code Tags" link in my signature.
lspci -nnk | grep -iA2 net
You should use the default fonts in your posts. Bold, coloured etc. fonts should be used only to highlight the important parts of a post, if really required.