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Dell Inspiron 1545 screen keeps turning bright green

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In the last couple of weeks my laptop screen has developed a fault. Generally, it will start up quite normally, but it will suddenly turn bright green while I'm working. The only way to get it back to normal I have found is to go into Screen Saver settings, do a preview and it will then revert to the normal background. Then after a short while it will turn to that awful bright green again and I'm back to square one. The laptop is about 3 years old and is working fine apart from this problem. Any ideas?
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Welcome to GeekstoGo

Your first test is to connect an external monitor.
Some laptops will automatically detect the presence of an external monitor.

Others require an F key to be pressed.

Consult your manual if you have it. If not here is the link

If the fault lies with your LCD screen on the laptop, the inverter - although that usually results in the image fading, then the external monitor will work OK.

If the fault lies with the graphics chip or a driver or other matters connected with it, the external monitor will NOT solve it.

Therefore this is your first test and we may then have a more definite idea of the way to go.
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