No Display

Help.  I replaced the display on this notebook and it still doesn't work.  I went on their website but I can find specific troubleshooting skills.  I'm running out of time and need your help.  Anything I can do to make it work.  I checked all of my connections, etc.
yankeegirlAsked:
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silemoneCommented:
are you saying you replaced the entire bezel, or just the LCD?  Why did you replace it?  I'm assuming you're talking about the laptop screen and not an external display, yes?
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silemoneCommented:
Did you replace the inverter also?  if you flash a flashlight on the screen, do you see windows is really working, just really dark (i.e. is backlight bad...)?
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yankeegirlAuthor Commented:
I replaced the whole top of the laptop, whatever that's called.  (sorry for my ignorance)
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rindiCommented:
What happens when you attach an external display to the VGA output of the Laptop? Also when you turn the PC on what happens, do the LED's come on and does the HD sound as if it is loading your OS?
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yankeegirlAuthor Commented:
I attached it to an external LCD panel and nothing displayed.
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silemoneCommented:
wow...it seems your video card is bad...this is a motherboard problem...
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silemoneCommented:
did you attach the external monitor before you turned on the computer to make sure the computer knew to use external monitor?  or toggle to external motherboard using correct key combination?
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silemoneCommented:
if so, next try your ram...take out one stick, leave in one and test...then do the same for other ram...test each stick in both ram slots...if its not your ram...how is high is your resolution set on your machine?  when you connected to the external monitor, did monitor notice that the machine was connected to it?
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rindiCommented:
If the PC doesn't sound as if it is starting windows (you should hear hard disk activity and also see the HD LED blinking, if there is no activity from there, or if the HD LED is only constantly on, windows isn't starting) then it isn't a display issue, or not only a display issue. If nothing at all happens (no LED), then the mainboard can be broken, or the VGA card, if it is separate to the mainboard, that can also be broken, or the PSU or battery, or the RAM isn't good or badly inserted, or the CPU is bad or not secure, etc., etc.
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