Hi,

Please check if this happens in Safe Mode.

Problematic Extensions

Troubleshooting Extensions and Themes

Uninstalling Add-ons

Uninstalling Toolbars

No it doesn't happen on Safe mode.

Safe mode disables the installed Extensions and themes (Appearance) in Tools (Alt + T) > Add-ons. Hardware acceleration (Tools > Options > Advanced > General) is also disabled. You can try to isolate the cause starting with the extensions.

I 've already done it and I saw that Shockwave Flash causes this problem.

You can try right-clicking on a Flash video, click the left end icon and deselect Enable hardware acceleration. Can you also post a screenshot: Add images: Browse below Post a Reply on this page.

I disabled the hardware acceleration but the dot is still there. You can see it on the left side inside the circle.

That looks like a dead pixel on the LCD. Nothing to worry though. It is a common phenomenon and would only appear on very dark visuals.

That is what I thought at first. But it isn't a dead pixel. I told you that when I disable Shockwave flash the dot disappears. And I have tested it on a second monitor as well...

It could be that the Flash Player has a problem adjusting to the graphics card/drivers. It may disappear with the next Flash update. You can also try the Flash Player Forum, users may have reported similar problems.

Ok. I 'll just wait for an update. I think the problem exists since the last update of Mozilla and Windows 7 (same day). Thank you anyway.

No problem. You can check with the Flash Player forums in the meantime. There could be a solution.