Hard drive noise is usually a rhythmic "click" not a sustained "whirr". We can test the hard drive in the BIOS to confirm its HDD or FAN. Tap F2 as you power up to enter UEFI diagnostics and look for the hard drive test. If you do not have UEFI diagnostics (i.e. your laptop came with Windows 7 not Windows 😎 then tap F10 and look for a hard drive diagnostic in the old-school BIOS interface.
Sometimes the Fan issues can be fixed by self-help such as blowing out the fan with compressed air.
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