My MacBook pro is frozen and I can't restart, even by using the power button or control command

Hi- my MacBook pro froze about an hour ago and I've been unable to reboot it. Any suggestions? I've tried the power button, control + command + restart, erc ad none of them do anything.

Hold down the power button for 6-7 seconds.  It will power off, then click the power button to turn on again.
Regards,
Captfred

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