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Mac Pro 5.1 Booting and then nothing.

G

GameFreak348

macrumors regular
Original poster
Feb 28, 2014
152
0
Hello,


My Mac Pro 5.1 was laying around since like 7 months, today I decided to turn it on. It has no hard drives in it or anything, keyboard and mouse dont work but it always boots, the problem is it boots into Bootcamp even tho I have no harddrive or anything, and I cant do anything. I cant even pram reset it since keyboard doesnt work, I tried many things.


Got any suggestions?
 

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I am not sure if the reset button (next to the battery on the mobo) will help. By considering your Mac don't have HDD, or keyboard, and just laying around, why not give it a try?
 
No, that is not what happens when no bootable drives are connected////
Your MacPro will bring up the flashing folder/? .
The screen that you show is one that is expecting to boot to Windows.
Reset PRAM - if you have a wireless keyboard that is not, then you need to try a wired USB keyboard. If you don't have a USB keyboard, borrow one.

I'm guessing that your GTX 770 will not boot into the Option-boot screen.
That's one of the reasons that you would keep the original graphics card - Swap the GTX 770 for the original graphics card. it will help you get your MacPro going again.

If you don't have any drives installed now - what do you want to do with your MacPro?
 
Oh, my mistake then. It's what happens on my computer when no drives are connected, but one of my normal drives is a Windows drive.
 
Im using the apple GT 120, HDD are connected but it wont let me do anything, keyboard and mouse are not working but connected.
 
Is that the Apple mouse / keyboard? Is it the wired one?

HDD connected means the OSX one? Or the Windows one? If the Windows HDD still there, plug that back in and boot to desktop, then you can use bootcamp apps in Windows to assign the boot disk back to OSX HDD.
 
Do an SMC reset.
Disconnect all external cables (including ethernet, displays, and external switches or hubs, and especially the power cable.
Wait a few minutes. I think Apple tells you that 15 seconds is fine, but I usually just unplug, then take a coffee break.
10 minutes with nothing connected should be enough.
Plug power, USB keyboard/mouse, and display back in place. Make sure the display is plugged in to your GT120 card, and may be best if that is the only card installed.
Press and release the power button, and immediately press and hold Command-Option-P and R.
You should hear the boot chime sound.
Keep holding the same 4 keys until you hear the boot chime 2 more times. If you don't hear the boot chime, just keep holding the same 4 keys for about 1 minute.
If you don't have ANY boot drive installed, then it's really just the reset that you need, so press and hold the power button until your MacPro shuts off.
Now, try to Option-boot to some OS X system. A USB OS X installer would be fine. Should work this time.
 
Do you have an old OS X Installer DVD or USB stick? Insert it before you start the Mac Pro and look what happens.
 
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