FaceBook shows little squares only after power outage

Hi
We had a power outage last night and when I turned on my computer and checked my facebook account I am seeing little squares. I tired restarting my computer, cleared browser history but it still won’t work. Can someone please help me out? I haven’t changed anything for the past 24 hours as I can recall. And it is neither a facebook problem nor an ISP problem since my friend on the same neighbourhood and ISP has no problems at all.
