I didn't close my mac air down properly and when i tried to use it, the screen was frozen.  I turned it off and restarted it, and the grey screen with the apple logo appear and the circle just keeps spinning.  Can you advise?

i didn't close my mac air down properly and when i tried to use it, the screen was frozen.  I turned it off and restarted it, and the grey screen with the apple logo appear and the circle just keeps spinning.  Can you advise?

Try resetting the SMC
Intel-based Macs: Resetting the System Management Controller (SMC)

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