Feel free to contact me through my email on my contact card too.The NVIDIA® GeForce® GT 120 is essential for watching Blu-ray movies on a PC, accelerating the Microsoft® Windows Vista™ experience, and powering Microsoft® DirectX® 9 and DirectX 10 games. Let me know if this helps, I’d gladly like to know what the solution its.

The last discussion I saw that was helpful was this one, which also links to another discussion with more insight into the issue. Not sure the punchline here, but it’s a Friday night and I ain’t got time to read that but you probably do.

I also saw some valuable info on this site. Something I also found was this YT Vid that says “If you'd like to use your Mac compatible graphics card alongside your RX 580 for boot loader support, you can always use power from a SATA port from the hard drive bays convert that into a 6 pin with a SATA to 6 pin adapter.” I mean, it’s not ideal, but worst case you could try that… Though I would try every possible alternative before pointing the finger towards the PSU if the computer boots normally with the stock GPU. Unless, of course, the actual PSU is failing. Sure, it could be a PSU issue, but I sincerely doubt it since it seems like the RX 580 is the go-to GPU for Mac Towers ever since Mojave came out, since it “requires a graphics card that supports Metal” according to this article. Follow the Apple Technician Guide for 'No Video' ()įor the tech guide, go here and scroll down to the bottom, you’ll see the PDF: Mac Pro 2009-2012 Repair Mark, I figured one of the greybeards would have cranked out an answer by now, but I'll throw in a few suggestions:

The voltages on the aux ports is fine, but I have no way to test with a calibrated load to see if indeed the PSU is putting out the power it is supposed to.Īny thoughts? Am I doing something wrong or forget to do something? I almost think it is a PSU issue that maybe it is not putting out the power needed. I tried the RX 580 again in the other x16 slot. So I put my stock GT 120 card back in and everything is fine. So I then purchased the RX 580 (nice blue card)! When I installed the card I get nothing. Thinking it may be a bad card I returned for a replacement and am waiting on that. When I tried the Vega, it booted fine, BUT NO VIDEO. I have tried the Vega 56 and now the Sapphire Nitro RX 580. I have a 2009 Mac Pro -> 5,1 and upgrade CPUs running OS X 10.13.6.

Nvidia geforce gt 120 metal support