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Monitor black with green light on

\015 My gf has a daewoo 19in lcd (f109A). It worked fine, until i connected to my pc as a secondary monitor. It worked fine as a secondary, until i played a movie. It turned black. green light still on. If i adjust video settings or turn it off and on, it would flick on for a split second then turn black with green light still on. \015\012\015\012I replugged it back into gf's cpu. same problem. monitor black and green light on. \015\012\015\012Could it be, that my cpu has some video settings that damaged her monitor? Or is it old and dying already. \015\012\015\012i tried to troubleshoot it on the laptop. no luck. it would turn on the screen for a split second and turn black again.\015

Answers :

Did you changed frequency of that monitor? if it is out of factory setting that could be the problem, try to connect it again as secondary and set Hz to default, if that does n't work try same settings on both monitors? i have connected two monitors i had same problems , my secondary monitor was clone for tv if you are using secondary monitor for clone to ty (with s-video or whateever) if tv is old it must be 60HZ 800x600...
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