I have a 2012/3 MacPro (cylinder shape with the latest possible system) which is now suddenly showing a black screen with some evenly spaced white stripes down the screen. Progress bar gets to about 40% and stops there. Nothing else.
Suggestions or prognosis?
Without yet a service, any idea if the data is retrievable?
cheers 👍
that does appear to follow the computer, not the display.
try safe mode, as I described above.
Because it does not load the accelerated display drivers, it MIGHT complete startup, and allow you to enable File Sharing or Screen Sharing to another Mac.
if safe mode does not complete startup, on an older machine like the 2013 Mac Pro, you can still invoke Target Disk Mode, which is implemented in the older Mac's ROM, and does not require MacOS to boot up.
Transfer files between two Mac computers using target disk mode - Apple Support
Tried Command + Fn1 on startup- nothing changes :(
get to same progress stage and halts
Tried the press and hold On button… same result… doesn’t look good :(
if your Mac won't start up all the way, you can look at this article for some ideas:
If your Mac doesn't start up all the way - Apple Support
another way to make progress is to use Safe Mode.
Safe Mode does a number of different things.
On older Intel Macs, hold shift at startup, but have your userid and password at the ready.
On newer Apple silicon Macs, shut down your Mac. Then as you start up again, hold the power key until the ’Startup Options’ screen appears.
A parade of unusual things happens.
• Your Mac loads just enough of the kernel to do a disk check. Then it proceeds to do a disk check. This can take an extra about five minutes.
• your userid and password are required, even if you normally auto-login. So have them handy.
• Your Mac adds ONLY a minimal set of Apple-Only extensions, Not including graphics acceleration extensions. Screen updates will therefore be wonky and slow, but it ultimately should be correct.
• Your Mac assumes defaults for as many settings as possible, including screen resolution. This is the key for re-setting the screen, but there is a little more to it: Resolution is likely to be temporarily lower and settings ordinary. Use this as a starting point to customize settings to your liking, if that is your issue.
If you make NO changes, regular mode will just revert to what you had set before, so DO make changes!
Any changes you make in Safe Mode will "stick" in regular mode after you restart.
• after a Restart in normal mode, your Mac will take slightly longer to start up [once] because it rebuilds some system caches.
"Works in Safe mode, fails in regular mode" implies "It's typically something you added".
>> But in your case, it could also be that the graphics card has died.
How to use Safe Mode on your Mac
Start up your Mac in safe mode - Apple Support
Mac Pro shows black screen with white stripes, stops at 40%
