Could you test in Firefox's Safe Mode? In Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" button > Restart with Add-ons Disabled
• Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

No, same result. I also tried reinstalling and refreshing FF. AND I tried installing 32 bit vice 64 bit. All results in the same behavior.

Thanks for checking that. Have you noticed any indications of potentially blocked content, such as:

• Shield icon near left end of the address bar (Firefox's What happened to Tracking Protection? feature)
• Websites complaining that JavaScript is disabled
• Websites complaining that cookies are disabled
• Secure connection errors

No, no indications of blocked content (other than content does not work). No asking to enable install or update any thing,

Well now jscher2000, researching similar problems I find I forgot a key piece of info. The laptop is a touchscreen model. Following advice that, curiously enough YOU gave euthenia in April, I played with the dom.w3c_touch_events.enabled setting. Setting it to 0 solved the problem...I not sure how this will affect the other touch screen features but I not that concerned with that. Thanks for the help.

Thank you for reminding me of that issue. I wonder if the Windows 10 update modified something that has made Firefox behave differently than it did before?

Not sure. I updated another of my NON touch-screen laptops to FF 57. Same version and build of Wind 10 Pro. No issues with dom.w3c_touch_events.enabled set to 0 or 2. It would seem that FF can't deal with HP touch screens.