External monitors (tried 2 now) plugged into my laptop keep displaying a DVI No signal message (as well as video cable unplugged) and the color is all blue/greena and yellow as though it's missing red. Occasionally the right color comes through. The color is correct on the laptop screen. Ideas?
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Which type are the monitors? LCD or CRT. You should try a different cable,
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I did not find an L3050 model, only an L305D. The L305D does not have a DVI port, only a VGA port. If you are using a VGA to DVI adapter, the adapter might be the problem. Try an adapter that you know works.
RE: the VGA vs DVI - I'm not using an adapter, just the cable that came with the monitor (they sent 2 and the one I have plugged in is the only one that fits so it must be a VGA since you found that my laptop doesn't have a DVI). So the fact that it says No DVI signal must not be the problem.
Any other ideas for what's causing the color issue are welcome
It is possible that the VGA port on the laptop is bad. Note: Check the port connector. A VGA connector will have 3 rows of pins, with a total of 15 pins. Also, check the cables and connectors to make sure that there are no broken or bent pins.
If the VGA port is bad, you would probably have to replace the motherboard in the laptop. That would likely not be worth the expense - a new laptop with better specs would not cost that much more, even assuming that you could find a replacement motherboard.