Continuously prompted it install flash?

Hi, I continue to get prompted to install flash.

Windows 7, 64 bit

IE 11

Flash 12.0.0.77

I usually get a banner/error that says I need to install flash or get the most current version. I thought this was probably Malware, but Malware Bytes, Hitman pro, etc. say the system is clean. It also pops up at different times and not always the same site, and not everytime I visit the same site. For instance, I launch IE, homepage is google.com. I may or may not get the warning message. Same with Facebook.

What should I check?

I've also been noticing this on my iPad, really goofy since I thought Safari did not support Flash?

thanks,

T