ANSWERS: 2
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you might need to get a new printer network.... i believe thats what there called
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it sounds as if the connection between the computer and the monitor needs checking for good connection and no bent pins. you could try another monitor lead Or another monitor Or another graphics card the problem lies with one of those, and doing a bit of swapping around should soon give you an idea where the fault lies. Not so good possibility is that at some time the monitor lead has been yanked and caused some damage to the motherboard so that you get an intermittent fault. That would probably mean a new motherboard.
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