A friend of mine recently got a pretty terrible virus. After removing everything I discovered his steam also seemed to be broken. On the Steam "Ads" popup as well as the main page I would get the following errors:
Error Code: -130 Failed to load web page (unknown error).
steam needs to be online to update. please confirm your network connection and try again
it turns out you can correct these simply by doing the following:
Chrome Settings > Show Advanced Settings > Network > Change Proxy Settings > Lan Settings > Deselect ProxyCheckbox
I guess the viruses turned on some proxy...
