Info came across for graphics card but no version # for drivers. So please https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration#w_after-upgrading-your-graphics-driver Try No Hardware Acceleration also. then https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode also https://support.mozilla.org/en-US/kb/fix-problems-images-not-show

Please let us know if this solved your issue or if need further assistance.

Over the past few weeks we've seen many reports like this.

Would you try this :

Type in the address bar about:config (press Enter) Promise to be careful, if asked) Type and look for the preference : security.sandbox.content.level and set its value to 1 (one) (default value is 3 )

Are things back to normal now, or stil lno joy  ?

Thank you very much - changed to '1' as suggested, restarted Firefox and instant repair

trilby274 said

Thank you very much - changed to '1' as suggested, restarted Firefox and instant repair

You're welcome - glad everything looks the way it's supposed to again  !