Webpages not displaying correctly?

I'm running Windows 7 on an HP laptop, but this problem is happening to all computers in my home besides my iPhone. The majority of websites will not display correctly and show up without a layout and links on the side that I can't click on. YouTube seems to display correctly, but social media sites like Facebook and Tumblr won't load properly.

I emptied my Firefox cache, cookies and browsing history.
I uninstalled Firefox.
I tested for malware and viruses.

I ended up reinstalling windows to factory settings and did not put any of my old documents or photos on the computer. I then found out that it was happening to all computers in the house so I changed the DNS server to Google's, but it's still happening. Any ideas?

*** internet service provider?

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