My iMac over heats?

iMac works for 5 minutes then fan blows and freezes up. Drive DX show temperature concerns.

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Have you changed out the original hard drive by any chance?

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If you can post a snapshot of the discreet sensors you see within Drive DX.

Or, install this app which shows things a bit more graphically TG Pro and post it.

Adding images to an existing question

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