Mac crash grey screen question mark

There is another common startup problem that's often mistaken for the gray screen issue: That's a separate problem, which you can usually easily fix by following our troubleshooting guide. Disconnect all external peripherals , and keep them removed for the duration of these steps unless otherwise noted. To do this, first turn your Mac off by pressing and holding the power button to force it down. Finally, power your Mac back on. Don't disconnect the keyboard , mouse, or display, or the rest of these troubleshooting steps will be quite hard to complete!

If your keyboard or mouse is connected via a USB hub, be sure and bypass the hub by plugging your keyboard and mouse directly into your Mac for these tests. One of the most common problems that can cause the gray screen issue is a bad peripheral or peripheral cable. When a bad peripheral is plugged into your Mac, it can prevent it from continuing the startup sequence, and cause it to stall while it waits for the peripheral to respond to a command.

The most common form of this is when a bad peripheral or its cable causes one of the signaling pins on one of Mac's ports to get stuck in one condition set high, set low, or shorted out to ground or positive voltage. Any of these conditions can cause your Mac to freeze during the startup process. If your Mac starts back up without issue, then you'll know that it's a problem with a peripheral. You'll need to shut your Mac back down, reconnect one peripheral, and then restart your Mac.

Continue this process of reconnecting one peripheral at a time and then restarting your Mac until you find the bad peripheral. Remember that the problem can also be a bad cable, so if you plug a peripheral back in and it causes the gray screen issue, try the peripheral with a new cable before you replace the peripheral.

If your Mac doesn't start up

Swap your mouse and keyboard with a known good pair, and then restart your Mac. If you don't have spares, just disconnect them and restart by pressing and holding the power key. If your Mac gets to the login screen or desktop, then you'll need to determine whether the problem is the mouse or the keyboard.

How to Fix Macbook Pro, Air. Flashing Folder , Blinking Question Mark, White Screen, Freeze Randomly

Try plugging in one at a time and then restarting to confirm. Start your Mac using the Safe Boot process if no peripheral or cable appears to be at fault. To do that, first disconnect all of the peripherals, except the mouse and keyboard. During the Safe Boot, your Mac will perform a directory check of your startup drive. If the drive directory is intact, the OS will continue the startup process by loading only the minimum number of kernel extensions it needs to boot.

I reviewed several online videos and they all point to cable replacement for HDD. I have a SDD in my Mac. What is the solution for that?

Kim Ashby kimkay. I wasin deisk utility settings and i cant install os x lion it keeps saying that the item is unavailable.. And i dont have choices of disk everytime i try to click the start up where you have to choose diak but nothing came off.. The click just say restart.. After i restart my macbook just start flashing folder with question mark..

Troubleshooting Mac startup problems

What to do?? MMy boboyfriend doesnt know what i did.. Im sure he ll get mad.. When is finishes click install mac os x or whatever type of mac you have,its probably the second choice. This will delete everything in your mac,all of your data. It would be brand new and will make you start over but it is the only way to fix it. It had this problem last week but it got back to normal by itself, now it's just stuck there, what do I do please?

Show 3 more comments. Select a Language: Help Translate iFixit. Back Answers Index. MacBook Air 13" Mid 1. Rach Rep: View the answer I have this problem too Subscribed to new answers.

Is this a good question? Yes No. Voted Undo. Score Solved this by placing the MacBook Air into the refrigerator for about 30 minutes! Wish you luck! The All-New. The high performance electronics repair kit. Most Helpful Newest Oldest. Chosen Solution. Was this answer helpful? Thanks Shane. I just bought a new drive but I still have the same problem. Alec Saunders Rep: FIX I had this problem upwards of 7 or 8 times, and I fixed it by replacing the defective cable. Score 2. Good luck. Worked for me cheers.

It works thank you. Alex barraclough bouncingbuddha Rep: Score 1. I have tried restarting holding the Apple key and R - Nothing. I have also tried holding the ALT key on bootup but it just gives me an arrow curser and nothing else. I am not sure if the hard drive is even bootable.

How to fix a Mac that won't start

I do not have a OS Disc. I assumed incorrectly the OS would boot from my Pen Drive - it does not. I have cable internet if needed. I have Windows 7 Ultimate which I can connect to the internet from, and I have an iPad if that would help. This icon means that your Mac can't find a bootable disk. Your iPad definitely won't help; your pen drive, internet access, and Win7 disc might or might not help. Based on the model number that you've given, you have a white MacBook from That means that the OS that came with it was probably It could also have either This MacBook cannot support anything later than This laptop is long out of warranty.

If you are close to an Apple Store, since it appears that you don't have a lot of experience with Macs, you could try to schedule an appointment at their Genius Bar and see if they're willing to help you out. They'll probably be willing to run the necessary diagnostics to see whether you're experiencing a major hardware failure, such as a failed hard disk. However, if you have a piece of failed hardware, their cost to fix it is probably going to be more than the cost of buying a working Mac of a similar vintage.

How to fix a Mac that won't start | TechRadar

If it is a piece of failed hardware and you're comfortable replacing the hardware on your own, I've found that Other World Computing has good prices for replacement parts, and they also include excellent step-by-step instructions for doing the replacement. If it's not failed hardware, they might or might not be willing to help you get a new OS installed.

It doesn't hurt to ask. You need a bootable version of either You can buy physical DVDs for each of these off of Amazon or other sources. If the installation starts, then you're probably going to be okay. Go through the installation steps for the OS. If you run into trouble during installation, Apple has some excellent installation troubleshooting steps. If you don't want to run OS X on this laptop, you could just use it to run Windows. The specifications are better than the minimum specifications to run Windows 7 , so you could just use that.

There's an extensive set of instructions for installing Win7 on a MacBook Air , which should work for your MacBook too. Those instructions go through the whole process in detail, from creating a bootable USB drive which will require access to a Windows computer to installing it on your Mac.