Message: Let's Check Your Device for Malicious Software

HELP!!!   Last evening (July 27) while on my laptop,  I was booted out of Facebook then asked to log in.  When I do try to log in, I keep getting the following message and a blue button saying Clean this device. I can log in no problem on a desktop and on my phone.  I am running a Norton Full System Scan but nothing being found.  I have cleared history, cookies, etc.  I get the same message logging into Chrome or Microsoft Edge or Microsoft Internet Explorer.   No problem on the desktop and phone though.   I need access on my laptop so this is really hampering me.

This is the message I get along with the blue button saying Clean this device

Let's Check Your Device for Malicious Software

Hi Mary Ann, we're continuously working to keep your account secure. We've noticed that this device may be infected with malicious software. To continue to use Facebook, you can either use other devices or clean this device by downloading the scanner provided by Facebook and Trend Micro.