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GTX 660 underperforming in Sierra. Help?

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Adrian B said:
Remove battery and then refit battery. Go into BIOS and set up your settings again as it will reset to the factory default. If you update your BIOS to the newest version then you will also find that the factory settings are reset.

Some boards let you save your BIOS settings as a preset that you can then reapply by selecting your this preset. You will find out is your P7P55 board has this option in the instruction manual for the board.
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Okay. It's later than I anticipated, but I'm gonna dive in and pull the battery.
For posterity: my current BIOS build is indeed 1602. I can potentially try 1703 later.

VoiletDragon said:
Id say reinstall. Don't install Nvidia Web Drivers. Also verify that Graphics is set to PEG in the BIOS.
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I still don't see a Serial option in BIOS. But I also don't see a PEG option for graphics - or any graphics options, really. Is this normal? (I also can't explain the pink dotted lines on the BIOS screen. Those weren't always there, I don't think, but they don't seem to make a difference).
IMG_0786.JPG.jpeg
 
Build 1
Z390 AORUS MASTER |  i7 9700K |  Radeon RX 5700 XT OC 8GB
absurdio said:
Okay. It's later than I anticipated, but I'm gonna dive in and pull the battery.
For posterity: my current BIOS build is indeed 1602. I can potentially try 1703 later.



I still don't see a Serial option in BIOS. But I also don't see a PEG option for graphics - or any graphics options, really. Is this normal? (I also can't explain the pink dotted lines on the BIOS screen. Those weren't always there, I don't think, but they don't seem to make a difference).
View attachment 251046
Click to expand...

Pink lines can be either a issue with the Card or Monitor. Did you try a reinstall?
 
I think that at this point the card looks like it may be a factor. pink lines/artefacts suggest that the card is starting to fail which was also a suggestion given on the iMac thread that I linked to above getting the same kernel panic.

I would suggest that you see if you know anyone with a similar GPU that is macOS compatible to borrow to check. You may also wish to attempt a Linux installation to see how that goes.
https://www.ubuntu.com/download/desktop
 
Macallan
GA-B75M-HD3 |  i7 3770 |  Radeon HD 5570
VoiletDragon said:
Pink lines can be either a issue with the Card or Monitor. Did you try a reinstall?
Click to expand...

Adrian B said:
I think that at this point the card looks like it may be a factor. pink lines/artefacts suggest that the card is starting to fail which was also a suggestion given on the iMac thread that I linked to above getting the same kernel panic.
Click to expand...

Aw, no. That's the worst possible news. :(
I did pull the battery out of the mobo and reset it (chose reset rather than load previous settings), but the pink lines persist.
I created a new USB boot drive, and I'll try that now, but I'm not optimistic.

Definitely don't know anyone with a similar card I can borrow. But I can try installing Ubuntu tonight.
 
Build 1
Z390 AORUS MASTER |  i7 9700K |  Radeon RX 5700 XT OC 8GB
absurdio said:
Aw, no. That's the worst possible news. :(
I did pull the battery out of the mobo and reset it (chose reset rather than load previous settings), but the pink lines persist.
I created a new USB boot drive, and I'll try that now, but I'm not optimistic.

Definitely don't know anyone with a similar card I can borrow. But I can try installing Ubuntu tonight.
Click to expand...

You don't need to install Ubuntu. You can just boot to the Desktop.
 
Adrian B said:
The OP isn't able to get to the desktop without using nv_disable=1. Attempting an Ubuntu installation would reveal how/if the GPU functions on a second operating system for comparison.
Click to expand...

You can boot into the Desktop with Ubuntu without installing when booting from a USB.

FfEwE.png
 
also, try a re-seat of the card... smells like a hardware issue to me...
 
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