Question about ATI Mobility RADEON Graphic Card
Does the problem occur on external monitors (i.e. TV's connected) too?
If it does, it's likely a driver issue.
Deinstall the driver, download the tool DriverSweeper (just google it), deinstall the drivers for ATi-Graphics or NVidia-Graphics, and install the latest drivers. If you don't know whether you have an ATi or NVidia card, just delete both.
If you don't know where to download the drivers, I'll post a link.
Posted on Sep 09, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Feb 18, 2014 | Acer TravelMate 4100 Notebook
make sure the cable is securely seated and not faulty
the drivers might not be installed correctly you might have to uninstall the graphics card restart your computer then reinstall the graphics card and its drivers
If your computer came with a motherboard disc the drivers could be on it
Click start control panel administrive tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! or a red x right click select reinstall drivers or uninstall
hope this helps
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