Problem with black vertical strip on screen

I have a problem with a MB (oct2006): A black vertical band or strip is sitting on top of the screen keeping me from seeing about 20% of the screen. Along the left side of the strip there is a smaller strip that sometimes flickers. Also the wide black area sometimes turns to the color of the desktop. I would like to know if anybody have had this problem - am I looking at a software or hardware issue? And what can I do about it? Need help urgently!

Hi Berit,
There are two ways to tell if the band is software related:
1.) Hook up an external display to the machine, does the problem exist on that screen as well?
2.) When you first start up the computer, at the gray screen, does the band exist?
It more than likely is a hardware/display issue and will need to be serviced by an Authorized Service Center. Do you have an Apple Store near you? I'd recommend having someone trained to identify problems like this take a look at it and advise you on what happened, how it can be fixed, what it might cost, etc.

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MacBook Pro only boots in safe mode with pink vertical stripes across screen.

So on Friday night I was using Chrome on my MacBook Pro, when all of a sudden little squares of light flashed randomly across the whole screen and everything but the mouse froze. I thought that was weird, so after a few minutes I forced my computer to shutdown. I waited a little and then turned it back on, and opened Chrome again. The same thing happened again, so I forced shut down, backed up Time Machine and ran a virus scan. Nothing came up, so I put it to sleep and and went to bed. Then Saturday morning I went to open my laptop and it was off, which was weird, so I went to turn it on. After the apple logo and spinning gear went away, it booted to a light blue screen and stayed there. Again I waited and nothing happened, so I held the power button down until it turned off. I tried again but the same thing happened, so I booted in Safe Mode.
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This is a GPU problem. It's normal that you see that the problem is random, but the fact that your Mac is only starting up in safe mode indicates that your Mac can only start up if the VGA driver is used. Moreover, if you open Console, you should start seeing "GPU Debug Info Start", which indicates a GPU failure.
As you have a backup, take the MacBook to an Apple Store or reseller. In the case of the MacBook Pro, the GPU is soldered onto the logic board, so the whole logic board has to be replaced, being a very expensive repair.
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I don't know if this will "fix" your problem but:
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I want to create PDF from Excel 2013 using Adobe Acrobat distiller. When I do so I have problem with black which is 300 percent black instead of 100K. Problem is only with drawed lines from Excel's symbol menu (text is fine).
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Hi d p
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TABLES : caufvd, jest.
I N C L U D E P R O G R A M                                        *
*INCLUDE znrpstnd.
Selection Screen                                                    *
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      mask             = ',Text Files,.txt,All files,.*.'
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TOP-OF-PAGE.
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