Real, ranked next troubleshooting steps for a PC that won't boot or show any display, given what's already been tried. Not a diagnosis of the exact broken part — a real technician's standard sequence, ordered by what's cheapest/fastest to rule out first.

powers_on: does ANYTHING happen when you press the power button (any light, any fan movement, any sound) — false means dead/no-power, a completely different problem class than a POST failure. fans_spin: do the fans spin at all when powered on. fans_stay_running: do they keep spinning, or spin briefly then stop (the latter is a real, specific PSU/motherboard protection signal). display_output: is there ANY video signal reaching the monitor. tried_cmos_reset: already removed the CMOS battery / used the CLR_CMOS jumper. tried_minimal_config: already stripped to CPU + 1 RAM stick + no discrete GPU (or GPU alone) to isolate the cause. tried_different_cable_or_monitor: already confirmed the monitor and cable work on a different, known-good computer.

Looks up a beep pattern against real, sourced BIOS beep-code tables. bios_type must be one of: ami_legacy, ami_aptio, award_phoenix — ami_legacy and ami_aptio are genuinely different tables (legacy AMIBIOS vs. modern AMI Aptio/UEFI use different codes for the same beep counts), pick the wrong one and you'll get the wrong answer, so check which BIOS the actual board uses before trusting the result.

pattern: free text describing what you heard, e.g. "10 short", "1 long, 2 short", "continuous", "3 short, 3 long, 3 short".

Returns None-equivalent text (not a fabricated guess) when the exact pattern isn't in the real table this tool has data for — modern boards increasingly have no speaker at all and use debug LEDs instead, so no match is real information, not a tool failure.