Monitors samsung LCD TV problem facing

rafic

Recruit
I bought a samsung LCD tv monitor model LA19R7. I use this as a PC monitor. I use male to male cable to connect the Monitor with the PC. everything is fine. when i started to load Operating OS some lines are coming like in the TV when signal is weak. While using DOS i can see it clearly. what is the problem? i am also using UPS. They said in the catologue to make the resolution as 1440 x 900 but that resolution is not available. what to do? The refresh rate also i set it clearly as mentioned in the catalogue. any help in this is greatly appreciated and welcome.
 
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