scrolling makes screen go blank until I click near top. Individual boxes go black. The 3.7 version works fine.
Every time I move mouse over a box, it goes black. moving elsewhere restores it. If I scroll with cursor or mouse whole screen goes black except for some of the navigation at top. If I click at top, screen comes back.
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions 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.com/kb/Safe+Mode
In Firefox 4 you can use one of these to start in Safe mode:
- Help > Restart with Add-ons Disabled
- Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)
In Firefox 4 Safe mode disables extensions and disables hardware acceleration.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.
It blacks out when I try to click on Firefox.
Did you try to start Safe mode via holding down the Shift key and a double click on the Firefox desktop icon?
Yes. I did that, but it still blacks out.
I can't find a help menu. It gives few options.
This isn't worth the trouble. This is the fifth time I've tried 4. I'll go back to 3. It works fine. I don't have to put up with this aggravation. Software should work for me not the other way around.