Usually stuff like that is the result of advertisement blockers and tracking blockers screening out 3rd party embedded links.
Try loading the Chrome browser. I do not like Google, but there are some banks and shopping sites that only accept Chrome now.
You might try searching inside caves about a mile inland from the northwest shore of the Dead Sea.
Call the NSA. I am sure they have copies of your missing text.
I’d tell you how to fix it, but you wouldn’t be able to see my reply.
Make a new account from the User Accounts section of Control Panel, log into it and try the same sites again under the various browsers.
I had this happen to me several years back. Some sites I went to the top portion would come up but not the text. I can’t recall if I ever got that problem fixed as I finally got a new computer. That computer was an XP, now I have Windows 7 for my desk top and windows 8 for my lap top.
Do a hard reset on your browser and see if that fixes it.
I’m not sure how to do it in Firefox, but you do it like so in Internet Explorer:
Go to “Internet options” (through Tools menu selection on older IE, the gear icon on IE 9 or later).
Click “Advanced” tab.
Click “Reset...” button.
On the next window that appears, check “Delete personal settings” checkbox and click “Reset” button to finish up.
Close out IE and restart it.
Never have this problem on my desktop, but since we got the Kindle Fire and started surfing the web on that, it happens quite often. I still don’t know what’s causing it (I do suspect my privacy settings are causing it, as someone else mentioned, popup blockers, etc.), but try backing up to the previous page and reclicking on the link that took you to your ‘blank’ page in the first place. Also, try reloading the blank page (by hitting the reload button once you’re on the page) two or three times. Sometimes these maneuvers work for me.
One thing you can do, which I haven’t done yet myself but should, is find a page that’s giving you trouble, at a website you trust. Amazon, say. Then disable all your privacy settings and see if the problem persists. If not, enable one privacy setting and see if the problem comes back. If not, you know that privacy setting isn’t the culprit. Then, switch off that privacy setting and try another one, etc., until you’ve run through all of them and identified which, if any, is causing the problem.