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Apple Computing Products:
macOS - Desktop Hardware
Mac Pro power light on and chimes but no video output.
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<blockquote data-quote="chscag" data-source="post: 1503082" data-attributes="member: 46727"><p>The video card that's in it may be defective. Really no way to check it out except to substitute a known good card. Since it's an old model (the first Mac Pro) and you got it from a surplus auction, there could be other problems. Anyway, if you can get hold of another video card to swap out, that would eliminate it as the cause.</p><p></p><p>Also, it just occurred to me..... make sure the video card that's in it is a Mac card and not some PC card that someone threw in there. A PC video card is not going to work in a Mac Pro. Pull it out and tell us which one it is.</p></blockquote><p></p>
[QUOTE="chscag, post: 1503082, member: 46727"] The video card that's in it may be defective. Really no way to check it out except to substitute a known good card. Since it's an old model (the first Mac Pro) and you got it from a surplus auction, there could be other problems. Anyway, if you can get hold of another video card to swap out, that would eliminate it as the cause. Also, it just occurred to me..... make sure the video card that's in it is a Mac card and not some PC card that someone threw in there. A PC video card is not going to work in a Mac Pro. Pull it out and tell us which one it is. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
Mac Pro power light on and chimes but no video output.
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