Mac computer screen turns blue


The Mac won't start and it shows flashing question mark
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  • My screen is turning blue? | MacRumors Forums.

If it's one specific app that always causes the kernel panic, it's best to not use it until an update is issued. If no software needs updating and you can't get your computer to start without a kernel panic then it might be an issue with one of the programs you have loading up automatically on startup. That means its time to clear out your login items.

While you're still in safe mode you can remove any apps that start automatically:.

What to do if you get a blue screen on a Mac

If the kernel panics keep happening and no specific app seems to cause it, you might have a bigger problem. Things start to get really tricky if you're getting kernel panics and you can't isolate the issue with any of the above methods, so here are a few guides we've found helpful for pinpointing the problem with more advanced measures. This one hit me recently on an iMac. Out of nowhere, the screen turned a crazed green and yellow, and then the computer shut down.

After several attempts to reboot and trying just about everything listed above it eventually refused to turn on. In my case, my graphics card was toast, and I had to get it replaced, but that's not always the problem. Here are a few things you can do to troubleshoot and figure out exactly why your video card or display is freaking out. This doesn't always do that much good, but it's the easiest thing to do and only takes a few seconds. Sometimes this can correct display issues, and if so, continue using your Mac as you did.

This controls everything on your computer ranging from the power to the fans. Every Mac has a slightly different process for doing this, so head to Apple's official SMC Reset page , find your model, and follow their instructions this usually involves unplugging the power cord on a desktop, or removing the battery on a laptop. Once you reset the SMC a lot of your setting are restored to factory defaults and your display problems may get solved.

macbook pro turns on but screen stays black — my solution

The next step to figure out what's going on with your graphics card or display is to boot into safe mode to see if the problems persist. Power on your Mac and hold down the Shift key until you get past the Apple logo. This boots into a stripped down version of OS X. Here, you can see if the display problems are persisting. This might be screen glitches, pixelated graphics, or large black squares everywhere. If they are, it's probably a hardware issue and you should move on to the next step.

If not, it's likely a software problem, and you have a few different options for troubleshooting:. If none of those work, it's time to run the Apple Hardware test to see if it's a hardware issue. A lesser known feature of Macs is the Apple Hardware Test.

5 Warning Signs Your Mac Has a Problem (And What to Do About Them)

Like the name suggests, this is a way to test for hardware failures on your computer. It's not foolproof, but it might help you troubleshoot your issue moving forward. While a hardware failure is never fun, hopefully the Apple Hardware test will actually show it so you can get the faulty hardware replaced. If it is a hardware problem, you can check out iFixit's Mac Repair Guides to see if you can fix it yourself. As with any computer troubleshooting, sometimes you'll need to go through all kinds of tests and experiments to figure out what the heck is going on.

If you're lucky, the above tips will get your Mac in working order in no time. The A. Thorin Klosowski. Filed to: mac Filed to: mac mac troubleshooting how to os x mountain lion lion repairs diy feature. Your browser does not support HTML5 video tag. Grey screen at Startup on Mac is commonly addressed as grey screen problem because initially the display would appear grey during the startup phase when the problem hit the device. And you know there is a problem if it's a grey screen to say hello instead of a blue screen. At times, you can also see the Apple logo, a spinning gear, a spinning globe or a prohibitory sign.

Whatever it is, you and your Mac are stuck. There are no peculiar noises to demarcate the problem and make it easy for you to narrow the causes down, just Mac grey screen syndrome to grate your nerves. Like every lock with a key, there are no complications without solutions, and the same goes for your Mac!

There are ways to get the Grey screen Startup blue by fixing Mac grey screen by any one of the following methods:. If you get the blue screen, then yes, it was a problem with one of the peripherals. After reconnecting all the peripherals and if there is a persistent Grey screen Startup , your keyboard or mouse could be the culprit. Swap a spare if you have got one to test it out, and then restart your Mac. If you are still looking in the face of forlorn greyness, then let's look at other methods, don't worry yet. It's time to check if your hard drive has got any problems.

You have to run Disk Utility to confirm the same in order to fix your Mac grey screen. If you are notified the problem is fixed and yet it's the grey screen that greets you, then you know you aren't freed from the clutches of a Mac grey screen. Safe Boot will perform certain diagnostics to ensure your Mac is up and running, in some cases hope yours is one of them! It so happens that a Safe Boot can get rid of perpetual worrisome greyness, sometimes.

If Safe Boot worked and you have sighed the big sigh of relief, restart the system from the Apple menu once the desktop loads completely. You will have to take up any of the next three methods to solve the issue. But, it could be worth it.

MacBook startup problem - Alternate light/dark blue screen

This is tricky, as you will be now data-rupted and that's the ultimate step to fixing the grey doom. If that's the case, then yes, your Startup Drive is the criminal.

How to fix common Mac startup problems [MacRx]

If your Mac launched off successfully with one of these three methods, you may be able to repair your startup drive. It has to be taken into account how there is a scope for data loss on repairing the startup drive. You might take your Mac to an expert if you've got no backup to save you. Sounds terrible when put that way, isn't it? It sounds terrible because you've got no clue for a possible reason as it could be practically anything, and knowing Mac, the possibilities are endless.

Did you know, that what you see isn't really a grey screen, as it could have originally risen from a black screen, i. This is mostly relevant for Macs with built-in Retina displays, as these Retina iMac models don't have a power-on indicator.


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Grey screen at Startup on Mac is commonly addressed as grey screen problem because initially the display would appear grey during the startup phase when the problem hit the device. And you know there is a problem if it's a grey screen to say hello instead of a blue screen. At times, you can also see the Apple logo, a spinning gear, a spinning globe or a prohibitory sign. Whatever it is, you and your Mac are stuck.

There are no peculiar noises to demarcate the problem and make it easy for you to narrow the causes down, just Mac grey screen syndrome to grate your nerves. Like every lock with a key, there are no complications without solutions, and the same goes for your Mac! There are ways to get the Grey screen Startup blue by fixing Mac grey screen by any one of the following methods:. If you get the blue screen, then yes, it was a problem with one of the peripherals.

After reconnecting all the peripherals and if there is a persistent Grey screen Startup , your keyboard or mouse could be the culprit. Swap a spare if you have got one to test it out, and then restart your Mac.


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  • Step 1: Run Disk Utility!

If you are still looking in the face of forlorn greyness, then let's look at other methods, don't worry yet.

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mac computer screen turns blue Mac computer screen turns blue
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