Take a look at the response from the server using the browser's Developer Tools, or an external tool like Charles or Fiddler. See if something is happening to the response at the browser end. Is JavaScript enabled/disabled on some computers and not others? You might also see if turning on Compatibility View in IE helps.
It is possible that the libraries for CFGRID are so out of date that they have compatibility issues with modern browsers (this would not be a surprise - the JavaScript library CF uses in CFGRID is several versions out of date). I've seen others on the forum report issues with CFGRID and IE 9/10, and the usual recommendation is to scrap CFGRID and refactor to use a modern JavaScript library or widget (like JQGrid, Datatables, the current Ext-JS, or Dojo's grid) instead.
HTH,
-Carl V.