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Apple Computing Products:
macOS - Desktop Hardware
Mac Pro early 2009 video problems
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<blockquote data-quote="James" data-source="post: 1731417" data-attributes="member: 7582"><p>Hello all, I have a Mac Pro early 2009 desktop that I like very much. Have a lot of extras in it with 16 gig of ram, 2T of hard drive including 2 solid state drives. Works great !! .But have run into a problem with it. I was making a bootable flash drive for El Capitan, which is the OS it runs now seeing that Sierra won't work on it. I finished the process and in order to test it out I used sys prefs to change the boot drive to the flash drive.</p><p></p><p>Problem is when I then rebooted the computer it did indeed access the proper drive, but all I got was a black screen. It does seem like there is something there as when I blindly typed in my pass word I could hear some drive action but still nothing but black screen. Pressing the F12 will open and close my DVD drives.</p><p></p><p>I thought maybe the video card had gone out so I replaced it with another card but still all I get is black screen. Monitor, a 30" apple, works fine as I checked it out with my laptop and it works great so it has to be something in the Mac Pro itself.</p><p></p><p>So I wanted to change back to the original Mac drive but I can't as all I get is black screen. Tried booting from CD by holding down C when booting, no go. Tried booting to safe mode by holding down Shift when booting, No go black screen. Tried holding down option while booting, again no go black screen.</p><p></p><p>Evidently something in the MacPro went belly up, but what and how to fix it. Sure would like to get this otherwise great system going again especially as all my good stuff is there. Anyone have any ideas about what the problem might be ? Would be very grateful if you could fill me in. Thank you...</p></blockquote><p></p>
[QUOTE="James, post: 1731417, member: 7582"] Hello all, I have a Mac Pro early 2009 desktop that I like very much. Have a lot of extras in it with 16 gig of ram, 2T of hard drive including 2 solid state drives. Works great !! .But have run into a problem with it. I was making a bootable flash drive for El Capitan, which is the OS it runs now seeing that Sierra won't work on it. I finished the process and in order to test it out I used sys prefs to change the boot drive to the flash drive. Problem is when I then rebooted the computer it did indeed access the proper drive, but all I got was a black screen. It does seem like there is something there as when I blindly typed in my pass word I could hear some drive action but still nothing but black screen. Pressing the F12 will open and close my DVD drives. I thought maybe the video card had gone out so I replaced it with another card but still all I get is black screen. Monitor, a 30" apple, works fine as I checked it out with my laptop and it works great so it has to be something in the Mac Pro itself. So I wanted to change back to the original Mac drive but I can't as all I get is black screen. Tried booting from CD by holding down C when booting, no go. Tried booting to safe mode by holding down Shift when booting, No go black screen. Tried holding down option while booting, again no go black screen. Evidently something in the MacPro went belly up, but what and how to fix it. Sure would like to get this otherwise great system going again especially as all my good stuff is there. Anyone have any ideas about what the problem might be ? Would be very grateful if you could fill me in. Thank you... [/QUOTE]
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Apple Computing Products:
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Mac Pro early 2009 video problems
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