IBM Desktop Beep code No beep:::::::::::::::::::::::::::::::::::::::::::::::::::::::::: No power, loose expansion card (ISA, PCI, or AGP), a short, or an improperly grounded motherboard 1 short:::::::::::::::::::::::::::::::::::::::::::::::::: System OK 1 long:::::::::::::::::::::::::::::::::::::::::::::::::::::::: Video/display problem; video card incorrectly seated or defective 2 short::::::::::::::::::::::::::::::::::::::::::::::::::::::: POST Error displayed on monitor 3 long:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Problem with 3270 keyboard card 1 long, 1 short:::::::::::::::::::::::::::::::::::::::::::::::::::::::Problem with system board 1 long, 2 short:::::::::::::::::::::::::::: ::::::::::::::::Problem with display adapter (MDA, CGA) 1 long, 3 short:::::::::::::::::::::::::::::::::::::::::::::::::::::::Problem with EGA Repeating short beeps:::::::::::::::::::::::::::::::::::::::::::Problem with power supply or system board Continuous beep:::::::::::::::::::::::::::::::::::::::::::::::::::Problem with power supply or system board
IBM Thinkpad beeps code laptop Continuous beeping::::::::::::::::::::::::::::::::::::::::::::::: System board failure 1 beep with blank display:::::::::::::::::::::::::::::::::::::::::::: LCD connector problem, LCD backlight inverter failure, video adapter failure, or LCD assembly failure 1 beep w/message "Unable to access boot source":::::::::::: Boot device failure or bad system board 1 long, 2 short:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: System board, video adapter, or LCD assembly failure 1 long, 4 short:::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Low battery voltage 1 beep every second::::::::::::::::::::::::::::::::::::::::::::: Low battery voltage 2 short w/message:::::::::::::::::::::::::::::::::::::::::::::::::: Read the error message on the display 2 short with blank display:::::::::::::::::::::::::::::::::::::::: System board failure
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