driverDate: 8-8-2013

Lets start here : I have no idea which is active or if both are, Intel should be turned off in Bios adapterDescription: Intel(R) HD Graphics 4600 adapterDescription2: NVIDIA GeForce GT 740M driverDate: 8-8-2013 driverDate2: 10-28-2013 See if can find Drivers here : https://www.geforce.com/drivers and See if you can find updates for your Intel(R) HD Graphics 4600 as they are a over 4 yrs old : driverDate: 8-8-2013 You can Google Intel(R) HD Graphics 4600 and find the download page https://downloadcenter.intel.com/product/81496/Intel-HD-Graphics-4600, but you may have to know what generation chipset you are using. CPU-Z would tell you this https://www.cpuid.com/ Can also try : https://www.intel.com/content/www/us/en/support/detect.html I do not see errors in the drivers. Old & corrupted Drivers cause a wide range of issues. Please keep them updated to prevent issues and you never know when Intel will stop supporting them. Several reasons why not work to log in. Try : Please : https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer and https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles then https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings TEST....... If no issues then Extensions which need to be added back in 1 at a time and tested ..... Or it is your Profile : Make a new one and test ...: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles Please let us know if this solved your issue or if need further assistance.