I've been having an issue come up when browsing. Sometimes, I get a graphic glitch that causes a yellow line to streak across the screen (mot of the times partially or in a window/dropdown box) and it also causes letters to go missing. This is a new laptop so my initial thoughts were to reach out to Dell after I had exhausted my own options. We have still not been able to figure out the cause. There is a laundry list of things that I have tried and here are some that I remember. - Attempted fresh install by using Revo Uninstaller to remove everything, deleted app data and program data, and any other trace of the program that could be found. Then reinstalled Firefox with no addons or changed to about:config. - Uninstalled video drivers and then reinstalled. Updated to most current versions. - Followed instructions found here: https://support.mozilla.org/en-US/questions/1313520 - Tested other browsers to see if there was an issue with them, there was not. - Have been able to successfully recreate the problem on a regular basis. Because of this, I loaded Firefox in safe mode and browsed using it for a while. The issue did not happen and I could not recreate it while in safe mode. I am leaning toward this being a software issue due to the last to points that I mention above. However, at this point I am stumped and I believe Dell support is as well. Has anyone had this issue? Is there a fix? Is it possibly a hardware issue? Any help will be greatly appreciated.