Q: My mid-2012 Mac Pro will chime but won't boot.
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by Grant Bennet-Alder,Mar 21, 2016 9:28 AM
Grant Bennet-Alder
Mar 21, 2016 9:28 AM
in response to Margaret A Miller
Level 9
(60,729 points)
Desktopsa Mac that starts up, turns on the fans, and chimes is working. It does not need a new power supply.
what appears on the screen, if anything?
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Mar 21, 2016 10:01 AMby lllaass,Do you have another Mac? If so you can connect the two via FireWire and boot the 2102 MP in Target Disk Mode
http://support.apple.com/kb/HT1661
and see if you can access the disk I the 2012 MP
Try reseating the graphics card and the power supply connection (both ends) form the AUX connector on the logic board to the graphics card.
Does the fan on the graphics card work smoothly?
Maybe a bad graphics card.
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by Grant Bennet-Alder,Mar 21, 2016 10:32 AM
Grant Bennet-Alder
Mar 21, 2016 10:32 AM
in response to Margaret A Miller
Level 9
(60,729 points)
Desktops
persistent vertical lines are an indication that the display RAM on the graphics card has failed.
It may be time for a new Graphics card. this article points out the pitfalls and restrictions, but there are a few more cards available at the high end now:
User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards
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