Black screen display when returned from window lock
I usually lock my windows XP when away from computer for few minutes by "windows key" + "L". Before I lock the computer, I left my FireFox on the top of my screen. Once I have "unlock" my windows, the FireFox shows up as a black windows with only the title bar displaed.
I usually lock my windows XP when away from computer for few minutes by "windows key" + "L". Before I lock the computer, I left my FireFox on the top of my screen. Once I have "unlock" my windows, the FireFox shows up as a black windows with only the title bar displaed.
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.org/kb/Safe+Mode
Try to disable hardware acceleration.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
- https://hacks.mozilla.org/2010/09/hardware-acceleration/
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.