Desktop Screen fragments

[sambat]

At times my desktop displays parts of a web screen that I had been viewing (above the arrow).
Refreshing the screen doesn't help, but selecting a different resolution (but reverting before it takes effect) clears it.
The display drivers are up to date.

[jagabo]

Graphic driver bug. Get the latest WHQL certified driver for your graphics chip.

[Nelson37]

If you have the latest drivers, go back a version or two.

Check temperatures.

Roughly how often, using some standardized form of time measurement, is "At times" ?

Remove card, reboot, shut down, replace card, re-install drivers.

Check the warranty on the card. Bad memory can cause this.

[sambat]

@jagabo
@Nelson37
Rolled back, uninstalled, updated drivers, uninstalled card to no avail.
Temp is steady 100F, cleaned everything with compressed air.
Found that the problem always appears using Firefox.
Uninstalled FF and tried older and portable versions.
When 'Bookmarks' is clicked and if the list is so long that it overflows over the window the problem shows.
IE does not show the problem.
I Googled and found a few posts regarding FF and the annoyance - but no fix.

[aedipuss]

firefox has a list of about 10.000 unfixed reported bugs, and not enough time to fix a tenth of them. they are more concerned with "new" version numbers rolling out these days to fix the old bugs.

[jagabo]

Try turning off hardware acceleration in Firefox. At least as a test.

[sambat]

Try turning off hardware acceleration in Firefox. At least as a test.

Thank you - again.
Turned it off and the problem went with it.
Then turned it on and after a few tries it crept back.
I repeated the off/on and it always came creeping back with it turned on.

Tools > Options > Advanced > Browsing

[jagabo]

What version of Firefox are you using? 6.0? 6.0.1?

[sambat]

I was using 6, regressed to 4 yesterday.
Both exhibited the condition.
Using 4 right now.

[jagabo]

I'm still of the opinion it's likely a graphics driver bug. I've seen similar problems in the past that were eventually cleaned up by a graphics driver update.