Firefox is up to date. Just recently while in normal mode pages only show in black background. I tried uninstalling and re-installing fresh with doing a complete reset. At first I deleted all cookies and cache. I verified the network settings match to that of the other browsers. I uninstalled all the addons and themes. I made Firefox as clean as I can. It will only work in safe mode. In normal mode it will not even load the settings menu. I get in to safe mode by holding down the shift key while clicking on the Firefox icon. Safe mode loads pages perfectly. Got to be something simple I am not seeing that has changed! :-( In safe mode my banking sites and other very secure sites will not allow Firefox to log in. In safe mode logins that do work will not remember my logins next time I start up again. It's a mess this way. I have no idea of what I can do next! The other browsers Chrome and Edge are working perfectly. My preference is to use Firefox. I don't want to be forced to change my preferred browser. Hope someone can help me with this. I do not want to have to stop using Firefox on this computer. I have other computers where Firefox is working perfectly. Thanks! Jerry G.