Just started ... Mac mini restarts twice on cold boot before going to desktop!

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Ok I have had my 2011 Mac mini for a couple weeks now and it has been rock solid. It is the i5 2.5GHz version with the Radeon HD 6630m. I have 8GB RAM and a Samsung 256GB SSD. All of a sudden a week ago I went to start it (I shut it down every night) and it was on the Apple screen with the progress bar filling and it went black and rebooted (that was the second BONG). It got to the say screen and started progress and rebooted again (third BONG) and this time it booted up to desktop. It does this every single cold boot now.

What can I do?
 

MacUser2525

macrumors 68000
Mar 17, 2007
1,780
198
Canada
Hold down Command-V for verbose mode a text boot hopefully you will see where it is having the problem, you should do this for the second/third time as well to see what is happening there too.

Edit: To be clearer you hold the keys down after pressing the start button before you hear the first bong.
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Everytime in the last week or so. I am gonna try what MacUser2525 said when I get a chance.
 

now i see it

macrumors 601
Jan 2, 2002
4,015
8,016
Makes you wonder why the guy you bought it from sold it......

I just purchased a 2010 Mac Mini but before I put a SSD in it I'm letting it run on the original HD for a couple weeks to make sure it isn't a lemon.
 

now i see it

macrumors 601
Jan 2, 2002
4,015
8,016
It is probably a hardware defect. But to just rule that out, you could install a fresh copy of the OS on an external drive and boot from that & see what happens. Or boot from a USB installer & see if the problem persists.
 

Kaida

macrumors regular
May 28, 2016
184
74
Singapore
That's what happened to one of my Mac mini 2011. First few times, can't use 6630m (the bar is about 3/4 full), then boot with intel hd3000 ok. I downloaded a software called gfxstatus and true enough, when the machine is trying to switch to nvidia (watching a 1080 youtube) after a few seconds, it will reboot. rebake and works for a while but the same problem always comes back.

On windows, I can disable the 6630m in the control panel -> Device Mananger and just use HD3000. But I can't seem to lock it in HD3000 in OSX.
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Wow I didn't know my Mac mini had both the 6630m and an HD 3000. So do you think it is switching to the HD 3000 when it reboots twice? If I was to go to About This Mac when I get home will it say the current video card it is using or just always say 6630m?
 

chrfr

macrumors G3
Jul 11, 2009
8,192
2,522
Wow I didn't know my Mac mini had both the 6630m and an HD 3000. So do you think it is switching to the HD 3000 when it reboots twice? If I was to go to About This Mac when I get home will it say the current video card it is using or just always say 6630m?
Mac Minis don't do graphics switching in OS X; if the computer has a 6630m, it will always use it.
 

chrfr

macrumors G3
Jul 11, 2009
8,192
2,522
Ok I am confused then by what Kaida said.
So am I. The Mini doesn't have an Nvidia GPU, and the GFXCardStatus app doesn't run on Minis.
I suspect that in Windows, the Radeon GPU is actually not disabled as it seems to be.
It'd be more productive to see what the computer shows on the verbose (command-v) boot and also to look for any logs that might point to the problem.
 

for this

macrumors 6502
Nov 18, 2014
267
94
Have you recently added a new USB device to it? I used to have a similar issue (automatic reboot while cold booting—just one more bong though, unlike you) with an old Keyspan usa-28x USB to Serial Port adapter when I upgraded to El Capitan, it did fine with older versions of OS X.
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Hold down Command-V for verbose mode a text boot hopefully you will see where it is having the problem, you should do this for the second/third time as well to see what is happening there too.

Edit: To be clearer you hold the keys down after pressing the start button before you hear the first bong.

Ok I do this but the info flys by so fast I can't read a line and it reboots. It now reboots up to 8 times before finally launching. And I did a clean format and install. How do I stop of slow down that Verbose so I can see what's wrong?
 

for this

macrumors 6502
Nov 18, 2014
267
94
Ok I do this but the info flys by so fast I can't read a line and it reboots. It now reboots up to 8 times before finally launching. And I did a clean format and install. How do I stop of slow down that Verbose so I can see what's wrong?
Take a video and watch it in slow-mo.
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Take a video and watch it in slow-mo.
Yeah I tried that but while holding the phone or ipad mini to record I am not getting it in verbose mode argh. It is now booting up to eight times before it will load to desktop. Once it loads everything works perfect and I could just leave it on 24/7 I guess but hate to do that as my main computer which doubles as my Plex server already is.

Is there some type of software I can get to diagnose this issue?
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
upload_2017-4-8_11-58-28.png

Does this explain anything? Doesn't to me.
[doublepost=1491667151][/doublepost]Here is a little more ...

upload_2017-4-8_11-59-34.png

[doublepost=1491667245][/doublepost]And here is the last thing before the reboot ...

upload_2017-4-8_12-1-8.png
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Not a hell of lot there searching on that, I was thinking maybe it would be failing at some hardware step but that is not one. Was couple of hits referring to bad software update causing it but who knows if a re-install will help can be worth a try though.

https://www.google.ca/search?q=IOConsoleUsers+osx+reboot&ie=utf-8&oe=utf-8&gws_rd=cr&ei=NS7pWI2PFsXzmAH5gIGYBA#q=IOConsoleUsers+osx+reboot
This is a fresh install, thought it was a software issue so already tried that.
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
Anyone have any idea what could be causing this. It is now taking 8 or so boots to get to desktop and now I have noticed if I leave it inactive for a while it will reboot.

What diagnostic software can I install to troubleshoot this? Links?
 

GameGuru38

macrumors regular
Original poster
Sep 7, 2009
146
9
Ohio
I held down "D" and entered the diagnostics and ran them and they said no issues found. Why does it keep rebooting then?