BenchReady — Blank screen: last visible startup stage MacBook Air (M1, 2020), Apple M1 chip · 2.0.0 Record normal startup and Options visibility before further recovery decisions. MODEL FIT Choose Apple menu → About This Mac. Confirm MacBook Air (M1, 2020) and Chip: Apple M1. An Intel processor or another chip does not match. macOS Big Sur or later; Ventura and later call the preferences app System Settings. Diagnostic screens vary by macOS. Excluded: MacBook Air Intel 2020; MacBook Air M2; MacBook Pro M1 PREPARATION [ ] Screen remains blank at startup [ ] Owner understands possible unsaved-work loss from forced shutdown [ ] Undamaged compatible power supply [ ] Keep any existing backup accessible to you. [ ] Keep credentials and personal files outside this record. GUIDE 1. Distinguish the built-in screen from an external monitor. Record any logo, progress or Options previously visible; a brief blank period differs from a persistent blank screen. Sources: https://support.apple.com/en-us/102575; Opening / external display note 2. If normal shutdown is unavailable, Apple describes holding power/Touch ID for up to 10 seconds until off, then turning on. Consider unsaved work before this necessary forced shutdown. Sources: https://support.apple.com/en-us/102575; Turn your Mac off and back on 3. From off, holding power on M1 can show startup Options. Release at Options and record whether it appears; this observation does not require erase, reinstall or firmware work. Sources: https://support.apple.com/en-gb/102550; Apple silicon, steps 1–2; observation-only scope 4. If the built-in desktop works, route an external-only blank screen to the single-display task. Otherwise preserve normal-startup and Options results separately. Sources: https://support.apple.com/en-us/102575 | https://support.apple.com/en-gb/102501; External display note / If still need help 5. Tell Apple about backup availability before discussing Recovery or firmware procedures. The service provider should assess any data-affecting next action. Sources: https://support.apple.com/en-us/102575 | https://support.apple.com/en-us/116942; Recovery / cannot start Recovery; Make a backup EVIDENCE TO RECORD Blank screen: Not recorded Last visible stage: Not recorded Power attempt: Not recorded Normal startup — Built-in screen with safe power: Not checked M1 Options — Hold power from off; release at Options: Not checked External path — Only when built-in desktop works: Not checked STOP CONDITIONS Stop using and charging equipment with swelling, casing separation, smoke, a burning smell or suspected battery damage. Do not open or press on it. Set damaged accessories aside. Do not open mains adapters or force connectors. Do not erase, reset, flash firmware or bypass a lock as a default diagnostic step. OUTCOMES Visible startup recorded: Back up accessible files and retain this event for recurrence. - Record normal versus forced shutdown. - Keep earlier screen and accessory observations. Compare the external display: The built-in desktop works; investigate the monitor connection. - Use one supported native display. - Separate detection from visible image. Preserve the unperformed power check: Ask Apple to guide the next action with the data concern visible. - State why the attempt was skipped. - Provide backup and unsaved-work availability. Arrange startup support: Options visibility and continued blank startup need Apple review. - Share the last visible stage. - Discuss backup access before recovery or firmware work. Keep the unanswered checks visible: The screen scope or last visible stage is unconfirmed. - Provide built-in/external scope and Options availability. - State backup status and skipped attempts. - Keep unperformed conditions marked Not tested. Ask the provider to confirm these before further changes. Stop the powered checks: Stop using or charging damaged equipment. Keep away from hot or smoking equipment; obtain emergency help for an immediate fire risk. Arrange manufacturer guidance before handling or transport. - Tell Apple about the visible damage before arranging a MacBook Air service. - Provide built-in/external scope and Options availability. - Do not open the case, remove the battery, press a lifted surface, or continue a test to complete this record. SOURCES Mac starts up to a blank screen: https://support.apple.com/en-us/102575 (Turn off and on / Recovery / Service; checked 2026-10-13) Use Apple Diagnostics to test your Mac: https://support.apple.com/en-gb/102550 (Prepare / Apple silicon / Run Apple Diagnostics / Results; checked 2026-10-13) External display dark or low resolution: https://support.apple.com/en-gb/102501 (Connections / Support limits / Detection / Accessory permission; checked 2026-10-13) Get your Mac ready for service: https://support.apple.com/en-us/116942 (Make a backup / Arrange service / Check settings; checked 2026-10-13) Important safety information for your Mac: https://support.apple.com/guide/macbook-air/important-safety-information-apd9b8f7aa11/mac (Handling / Built-in battery / Charging; checked 2026-10-13) Identify MacBook Air model: https://support.apple.com/en-ie/102869 (Find model / MacBook Air M1 2020; checked 2026-10-04) MacBook Air (M1, 2020) technical specifications: https://support.apple.com/en-us/111883 (Charging and Expansion / Display Support; checked 2026-10-13) Start up your Mac in safe mode: https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac (Apple silicon / Verify safe mode; checked 2026-10-13) This is a blank guide. Use the website to save observations and export an importable record. No physical repair has been verified.