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Installed new graphics card Mac Pro 5,1 and now it only boots into Safe Mode

sgentile92 said:
Yeah I've invested too much money into this card to give up and try something else. Just trying desperately to get this one to work. I ordered an 8 pin cable because I was using 2 6 pins, and MVC said that I need to use a 6 and an 8. I'm really hoping that works.
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You might think if you have enough power in system (power supply).
 
>Upon booting, the boot screen only loads halfway.

that is your primary issue and you need to desribe that more. Could be a result of 2x6-pin. Driver refuse to start because not enough power delivered to the card.
 
StoneJack said:
There is no need to flash cards. PC card works without flashing and with web drivers. I have one working right now in my Hackintosh i3.
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There certainly is, if you want or need a boot screen on a Mac - as I do! Also, you recommended that the OP swap his card for one much less powerful. I'm glad your happy with your card, and you do get boot screens on a Hack. And since your on a Hack your post was not really apropos to this thread.

Lou
 
You might try installing your old GPU and underpower it to see if you see similar behavior during startup - i.e. leave a 6-pin unplugged and see if you get the same freezing halfway through booting. Maybe someone who knows more about this could comment if that test is safe and wouldn't do any lasting damage?

Also, hindsight being 20/20 of course, if you had used the card unflashed before sending it off you might have been able to rule out another variable.

Also: was your old card a 2 x 6-pin? If it was a 1 x 6-pin it is also possible that one of the power ports on the logic board is bad and you would not have known it with a 1 x 6-pin card.
 
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flehman said:
You might try installing your old GPU and underpower it to see if you see similar behavior during startup - i.e. leave a 6-pin unplugged and see if you get the same freezing halfway through booting. Maybe someone who knows more about this could comment if that test is safe and wouldn't do any lasting damage?

Also, hindsight being 20/20 of course, if you had used the card unflashed before sending it off you might have been able to rule out another variable.

Also: was your old card a 2 x 6-pin? If it was a 1 x 6-pin it is also possible that one of the power ports on the logic board is bad and you would not have known it with a 1 x 6-pin card.
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My old card was a 2 X 6 pin. I would try under powering my current card if I knew it was safe.
 
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netkas said:
>Upon booting, the boot screen only loads halfway.

that is your primary issue and you need to desribe that more. Could be a result of 2x6-pin. Driver refuse to start because not enough power delivered to the card.
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I'm hoping its that there's not enough power being delivered to the card. I'm looking for a 6 to 8 pin cable but I can't find the correct one anyplace. Aby idea where I can find one?

Are there any more details I can give that would help figure out what's going on?
 
Problem solved! I swapped out one of the 6 pin cables for a 6 to 8 pin adapter and everything works perfectly. Maybe this solution will help somebody else in the future.
 
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