MacBook Air Apple logo flashing

UvTechSoft wrote:

-> Simply try to hard reset and re-install OS of your device and unfortunately by doing this you can loose your all data saved in your local Macbook SSD Storage. But you can recover it all data which is already got backup on your iCloud account.

While you can sync some data from a Mac to iCloud, you cannot fully back up your Mac to iCloud.

See here for Apple's instructions on how to back up a Mac using Time Machine:

Back up your Mac with Time Machine - Apple Support

You can also us third-party solutions such as Carbon Copy Cloner.

Hi there,

Please try this

Your Mac shows an Apple logo when it finds your built-in or external startup disk. As startup continues, you should see a progress bar, with or without the Apple logo. This screen might alternate with a blank screen several times.

If you're installing a macOS update or upgrade

When you're updating or upgrading macOS, the Apple logo or progress bar might persist for much longer than usual. As installation continues, the progress bar might move slowly and pause for long periods. Apple recommends starting installation in the evening—so that it can complete overnight, if needed.

If your Mac is stuck on this screen or keeps restarting

If startup never progresses beyond an Apple logo or progress bar:

1. Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.

• • Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.

1. Turn your Mac back on. 
2. If the issue persists, press and hold the power button until your Mac turns off. Then unplug all nonessential accessories from your Mac, including printers, drives, and USB hubs. You could have an issue with one or more of those devices or their cables. 
3. Turn your Mac back on.
4. If the issue persists, once again press and hold the power button until your Mac turns off. 
5. Repair your startup disk as described in How to repair a Mac disk with Disk Utility.
6. If the issue persists, reinstall macOS from macOS Recovery.

If you need help, contact Apple Support.

There are a few potential reasons why your device keeps flashing on the Apple logo: 

•  Update errors. A flashing Apple logo can appear if an update file gets interrupted or corrupted, like when updating to the latest operating system. Think of it like your device is having a brain freeze.
• External devices issues. Your security settings can falsely detect a charger, a computer, or anything else connected to your device as a threat.
• Hardware malfunction. Damage to your hardware can cause your screen to show a blinking Apple logo.
• Jailbreaking. Attempting to modify manufacturer or carrier limitations or downloading an app from an untrustworthy site can lead to a black screen with a flashing Apple logo.

SOLUTION:

-> Simply try to hard reset and re-install OS of your device and unfortunately by doing this you can loose your all data saved in your local Macbook SSD Storage. But you can recover it all data which is already got backup on your iCloud account.

Also do check out apple official steps for reseting and re-installing the OS of your Macbook.

If your Mac starts up to an Apple logo or progress bar - Apple Support (IN)

Thanks.

One of these? If your Mac doesn't start up all the way - Apple Support