Edit: If Facebook is completely blank this will not help. That is a completely different problem. I'm working on a solution but if you have experienced this please read THIS post.
Temporarily Disabling Extensions and Trackers
Chrome UsersAt the top right most corner of the window there should be a button either shaped lie a wrench/spanner or three horizontal lines. Click this and select "New incognito window."
Firefox UsersAt the top left most corner of the window there should be an orange button that says Firefox. Click this and select "Start Private Browsing."
Internet Explorer UsersAt the top left most corner of the window there should be an orange button shaped like a small gear. Click this and select "Safety" and then select "InPrivate Browsing."
This will open a new instance of Chrome/Firefox/Internet Explorer only it will disable all extensions, browsing data, cookies, themes, anything you downloaded for your browser. It is essentially a pure version of the browser as you first downloaded it which makes it ideal for troubleshooting.
Once you have a save version of your preferred browser open you need to open Facebook and log in as normal. (Remember: Your browsing data has temporarily disabled so if you rely heavily on the "Keep me signed in" function you will have to enter your full Facebook login information) If Facebook loads correctly and the problems are gone this means that you accidentally picked up some sort of cookie or tracking data that is either malicious or poorly constructed that is interfering with your browser's ability to display Facbook OR it means that you have somehow installed a malicious or poorly constructed extension that is interfering with your browser's ability to display Facebook.