I right click on B.O.M. and select EDIT PARTS LIST.  I cannot find dialog box showing the parts list to allow editing.  It is not hidden behind anything.  It is happening with all idw's.  Others can edit the same drawings.  Only way to continue is to hit ESC key.  HELP!

As in, when you hit 'ESC', it opens up for editing? without a prompt of any type?
My suggestion would be to close out and restart inventor when that happens. If it still occurs, you may have to un-install and re-install...never had that happen before.

Problem solved.  Changed my DISPLAY settings for my no.1 monitor vs. no. 2 monitor & it showed up.

Wow. OK. Didn't see that one comming, lmao!