MacBook Air freezing & Restarting

Hi, uttam182.

Is the entire Mac freezing, or certain applications? If the latter, the steps here may help out: If an app freezes or quits unexpectedly on Mac

If the entire Mac is freezing, does this persist while using the Mac in safe mode?

Cheers.

Hey there uttam182, 

Since the issue does not persist while in safe mode, it is likely being causes by an application or applications loading when you login normally. We'll need to follow the steps from Remove login items to resolve startup problems on your Mac to isolate the problematic application.

1. On your Mac, choose Apple menu  > System Preferences, then click Users & Groups .

2. Click your account name below Current User, then click Login Items at the top of the window.

Make a list of the login items—you’ll need to remember them later.

3. Select all of the login items, then click the Remove button .

4. Choose Apple menu > Restart.

5. If this solves the problem, open Users & Groups preferences again, add the login items one at a time, and restart your Mac after adding each one.

When the problem occurs again, follow the steps above to remove only the last login item you added.

You may also want to follow the guidance and next steps found here: If your Mac restarted because of a problem

Have a good one!