Common Symptom: Fan at Max Speed, Screen Blank
On the 2020 Intel MacBook Air (A2179 / Board 820-01965), users frequently experience a situation where pressing the power button causes the cooling fan to spin at maximum 6500 RPM, the aluminum casing gets warm, but the screen stays entirely dark.
This is almost always caused by a corrupted SMC sensor rail or a stuck Lid Closed sleep assertion (SMC_LID).
Deploy DisplayGuard to bypass faulty sleep states and check your panel with Mac Screen Test.