Windows 10 - bad image popups -- now what?

[mollymorph]

Four days ago I started having trouble with Facebook, lagging, limited access, often unable to log out, ad nauseum.  I'm a freelance editor/minutes writer and have very particular computer habits when I'm working ... everything is shut down except for Word (latest version), Express Scribe Transcription software, and Outlook (latest version).  I occasionally open Chrome browser to check name spellings in municipalities websites, but seldom keep the browser open.  Yesterday I started getting a "Windows - Bad Image" popup (followed by a whole string of numbers, letters, etc.)  I googled it, and see I may have malware/virus.  I just noticed that since I could finally close Facebook, the popups stopped.  But this scares me.

I'm an older person who supplements my Social Security by freelancing.  I'm not as sharp as I used to be with latest technology (even though I was a keypunch operator and word processor before there were desktops).  And my tech guru died suddenly last month.  Aarrgghh!  Can a kindly soul help me through this?  Been a Malwarebytes member for several years, never needed help before.