Cannot get Apple MacBook Pro to boot up

I have this Apple MacBook Pro that when I try to start it, it will turn on but the screen has lines all over in it and then, as it tries to come on, the progress bar will move very, very slowly and then after a long time the laptop simply shuts down.  
 I had a new hard drive that I installed and attempted to install the OS on that, and this is what it does:  It goes online and downloads the OS, and when it gets done with download, the screen goes black, comes back on a solid blue-white color, the cooling fans on the motherboard begin running at full speed.  Nothing comes on the screen and after a long while the laptop simply shuts down.
I connected the laptop to an external monitor and disconnected the cable to the laptop monitor ( to see if the laptop monitor was faulty) and on the external monitor it shows vertical bars on the screen and the laptop acts the same way when attempting to install the OS.
Am I correct in assuming that the motherboard needs replacing?
beemmerAsked:
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dbruntonCommented:
>>  Am I correct in assuming that the motherboard needs replacing?

Possibly jumping too far ahead in your assumption, but you may not be wrong.  More testing required first.

Why did you install a new hard drive?  Were there any problems with the old hard drive?
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beemmerAuthor Commented:
The reason for trying out a new hard drive was to see if maybe there was something with the hard drive that was causing the system to boot up so slow (or not at all).  I did run a test on the hard drive with mini tool partition and it showed no errors.
I basically just wanted to rule out the hard drive.
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rindiCommented:
Have you tried using an external display? It sounds as if it is a video issue, which could either be the display, or the video card. If it is the Video card, most laptops have that integrated on the mainboard, so you may have to replace the complete board.
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dbruntonCommented:
So with the old hard drive the system was fine, if it would boot, but with the new hard drive you have graphics problems and trying to boot but won't?


And also, look at the cooling of this machine.  Cautiously blow out the vents with a can of compressed air.  Check cooling fan(s) are spinning freely.  Check there is no dust in the machine.

Ignore the link below at the moment, it might be used later for further testing or troubleshooting
http://www.makeuseof.com/tag/install-linux-macbook-pro/
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beemmerAuthor Commented:
Yes i did try out an external monitor and it still gives lines and vertical bars on the screen.  
And no, the system would try to boot with the old hard drive but after a while it would just shut down
I checked the heat sinks and they are not plugged up.  I blew them out anyway.
The fans seem to be working fine.  They are blowing good air though the heat sinks.
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strungCommented:
Is this a 2011 MBP by any chance? They are notorious for video board problems and I believe Apple has an extended warranty. You can check here to see if you MBP is covered:  https://www.apple.com/ca/support/macbookpro-videoissues/
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beemmerAuthor Commented:
MacBook Pro (15-inch, Early 2011) According to the serial number I put in, this laptop is out of warranty.
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dbruntonCommented:
OK, both hard drives give the same problem.

So that brings the problem back to the motherboard.  If you're not covered by the https://www.apple.com/ca/support/macbookpro-videoissues/ extended warranty you are going to need another motherboard.
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beemmerAuthor Commented:
Can you give me a good recommendation as to were I can locate a motherboard other then eBay? I don't mind purchasing off of eBay but would like to shop around.
Also is the MLB number what I need to go by when ordering another board?
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serialbandCommented:
It seems like you may be misinterpreting the the Apple site and it seems that Apple makes the page easy to misinterpret.

You've posted that you have a
MacBook Pro (15-inch, Early 2011) According to the serial number I put in, this laptop is out of warranty.

The video issues link shows that your model matches.
Affected Models

    MacBook Pro (15-inch Early 2011)
    MacBook Pro (15-inch, Late 2011)
    MacBook Pro (Retina, 15-inch, Mid 2012)

    MacBook Pro (17-inch Early 2011)
    MacBook Pro (17-inch Late 2011)
    MacBook Pro (Retina, 15 inch, Early 2013)

It seems to me that you qualify for the free video replacement, since your model is listed.  You are still out of AppleCare support, but that's irrelevant.  This is a separate extended warranty due to a faulty part.  Take it to the Apple store and ask for sure, as directed by the video issues link.  Don't purchase the replacement motherboard until they tell you that you can't get a free replacement.
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strungCommented:
Serialband is right. Take it to the Apple store right away.
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beemmerAuthor Commented:
Thanks for your help on this issue I have put the laptop back together and called the customer.  He said he would take it to apple to see if he could get warranty.

   Again thanks for all of your help
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