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Level 1

2 points

OS X Yosemite keeps rebooting on start up

Hi everyone, I have an early 2011 mac book pro and I upgraded it to OS X Yosemite 5 days ago, first few days was problemless, but I experienced lots of problems starting from today.

Today my Mac shut down all of a sudden, and when I tried to reboot it, it displayed garbled graphics with weird colors and progress bar and apple logo was all garbled. I waited to see what was going to happen, after reaching the half of the progress bar, screen went grey and in 10 seconds, mac rebooted itself and same events took place over and over.

I tried command + option + r + p trick, it didn't help, I had bootcamp installed, I tried pressing option after chime and starting windows 7, it didn't help either. I tried to reboot in recovery mode, progress circle kept turning, then screen became blue, fans started to work really loudly. Then I had to turn off using the power button.

The only combination that allowed me to turn on my macbook pro is command + r, after progress circle turns for a bit, screen becomes blue, despite all the fans working really heavily, if I wait for a minute and turn off the machine by using power button and turn on again, mac starts without a problem, I don't see any garbled graphics whatsoever. I don't know why it works that way, But If I shut down, and power up again, same garbled graphics show up, this is really annoying, to make my laptop work, I need to turn it on and off 2 times. I verified disk with disk utility. It looks fine. Does anybody have this issue, what else can I try? I would really appreciate if you share your thoughts on the issue.

MacBook Pro, OS X Yosemite (10.10)

Posted on Oct 28, 2014 1:17 PM

49 replies

ivs.sege

Level 1

4 points

Nov 3, 2014 11:33 AM in response to earikan35

@earikan35 can you get past the continuous restarts now? I took it to our only Apple re-seller in New Zealand and the guy said it's most likely a hard drive error.

Nov 4, 2014 12:07 AM in response to ivs.sege

Yesterday, I went to my local premium reseller. They told me that symptoms are probably by graphics chip. In next hours I should receive the budget with info from diagnostic.Too much coincidence that I installed yosemite and a few days later mi iMac has this problem.

sourtea

Level 1

0 points

Nov 4, 2014 4:17 AM in response to earikan35

Hi,

I got a late 2011 macbook pro with exactly the same issue. Any good news on the problem solving?

Thanks

Nov 4, 2014 8:22 AM in response to sourtea

I'm having the exact same issue too. Very curious to know what the reseller says.

Thanks!

earikan35 Author

Level 1

2 points

Nov 4, 2014 9:12 AM in response to ivs.sege

I am on a business trip for two weeks and I don't have my mac with me, but Last I checked I was able to get past it without a problem, I have few tricks if the issue occurs, here they are:

1) starting with command + r pressed, so it tries to boot recover disk, but booting sequence freezes after a minute of struggling. When I turn the mac off and on one more time, it generally starts fine and works fine, until it crashes and reboots again in a day or so

2) I prepared a os x yosemite installer usb, when I plug it in, and turn the mac on, and hold option key on startup, and select install os x option and click cancel, generally it works on fine on the next system reboots.

As you can see all of my suggestions are based on emprical observations:)

earikan35 Author

Level 1

2 points

Nov 4, 2014 9:12 AM in response to Sunilimon

Like you said, this problem started happening with OS X Yosemite, and it sometimes works OK, so I doubt that it is a hardware issue.

earikan35 Author

Level 1

2 points

Nov 4, 2014 9:13 AM in response to sourtea

Unfortunately no solutions yet, please see my reply above.

earikan35 Author

Level 1

2 points

Nov 5, 2014 1:56 AM in response to earikan35

Problem might be related to or might not be related to the following post:

https://people.cam.cornell.edu/~zc227/extras/early2011mbp_graphics.html

I will check my graphic card.

sourtea

Level 1

0 points

Nov 5, 2014 8:11 AM in response to earikan35

it is exactly what's happening on my mac. It ***** because I don't live in the US, neither can I find an Apple Store nearby in the city where I live, which is São Paulo. Thanks a lot, though

BoxRoyer

Level 1

4 points

Nov 6, 2014 3:31 PM in response to earikan35

Same problem here on a Mac Pro 2009. After upgraded to 10.10 the computer started to reboot no reason and when this happens, the hard drive won't apper from the bootable drives, until I turn off and on the computer. I already teste the drive with Disk Utility and DiskWarrior with no issues showing up. It's a software bug on the new Yosemite 10.10

Nov 9, 2014 11:49 AM in response to earikan35

I am having the exact same problem with my 2011 MacBook Pro. Started a few weeks after downloading Yosemite. I sure hope this gets resolved because my laptop is basically unusable at this point.

Nov 11, 2014 7:25 PM in response to earikan35

How do you backup the files first??

Nov 18, 2014 6:37 AM in response to earikan35

Finally, the premium reseller where I buy all my products, changed my graphic card. It's an expensive replace 300€ (about 350$) for an old model of graphic chip, but I don't want to renew my iMac because is all new except this part of it. Now my iMac works fine 😀

Hope you serve this answer.

Best regards!

Siddh86

Level 1

0 points

Nov 19, 2014 7:07 AM in response to earikan35

Hi fellow bad-experience-with-Yosemite users !

Same problem for me with a 2011 27' iMac...

But the difference for me is that I'm not even able to boot on Recovery Disk!

Problem seemed to appear after installing Yosemite (ok, so the first reseller who tells me to change something on my computer get kick-assed), and after a shut down.

My computer keeps rebooting itself again and again.

From now on, I haven't figured out how to resolve this problem without rage-throwing it from the window... I'm not even able to do like on PC's computers where I could replace the HD and backup all my files via USB-IDE or USB-SSD..

Hope I will get a bit of attention from the support which seems to give always the same answers everywhere...

Cheers mates!

Dante-1

Level 1

0 points

Dec 10, 2014 6:12 PM in response to earikan35

I have the same problem with my MacBook Pro after installing Yosemite. From reading this thread it looks like the graphics cards in these 2009-2011 MBPs can't handle Yosemite. It is convenient for Apple to say that it is graphics card issue requiring replacement. But not cool. The better and cheaper answer may well be to revert back to a previous version of the OS. Has anybody done this successfully?

OS X Yosemite keeps rebooting on start up