total blank facebook on my 4 computers

FYI, Facebook servers are accessible from my computer and I've seen no FB outages that are widespread or any mention of a problem. Whatever is going on might be local to you or maybe perhaps your ISP?

Are you running a business account by any chance?

Have you tried to delete the app from your computer and then reloading it?

Or is your virus protection software interfering with it?

Try on your phone, see if you can get in at all. Check other websites, big ones like Twitter or CNN. Possibly also contact your ISP and complain.

Google is in the middle of converting everything Google to their new logo and business model. It is disrupting many internet connections. I've been able to fix the ones on my PC by having it repair the DNS network connection and have been able to repair the problem on my phone by using the app with the new Google icon rather than the old Chrome icon..