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No beep: Power supply, system board problem, disconnected CPU, or disconnected speaker Continuous beep: Power supply, system board, RAM or keyboard problem Repeating short beeps: Power supply, system board or keyboard problem 1 long, 1 short beep: System board problem 1 long, 2 short beeps: Display adapter problem (MDA, CGA) 1 long, 3 short beeps
⇧ Shift press 5 times: ⇧ Shift 5 times [28] Hear beep when -lock key pressed: Numlock hold 5 seconds: Stop/slow repeating characters when key is pressed: Right Shift hold 8 seconds: ⇧ Shift hold for 8 seconds [29] [30] [31] Inverse (Reverse Colors) Mode Left Alt+Left Shift+PrtScn: ⌘ Cmd+⌥ Opt+Ctrl+8: Meta+⇧ Shift+i (if enabled)
The System Management Controller (SMC) is a subsystem of Intel and Apple silicon-based Macintosh computers. It is similar in function to the older SMU or PMU of PowerPC based Macintosh computers. [ 1 ] [ 2 ]
The interrupt button/programmer's key protruding from the air vent on the left-hand side of an Apple Macintosh Classic II computer (on the left, above the circular symbol) The programmer's key , or interrupt button , is a button or switch on Classic Mac OS -era Macintosh systems, which jumps to a machine code monitor .
Generally, a hard reset is initiated by pressing a dedicated reset button On some systems (e.g, the PlayStation 2 video game console), pressing and releasing the power button initiates a hard reset, and holding the button turns the system off.
A Happy Mac is the normal bootup (startup) icon of an Apple Macintosh computer running older versions of the Mac operating system. It was designed by Susan Kare in the 1980s, drawing inspiration from the design of the Compact Macintosh series and from the Batman character Two-Face . [ 10 ]
Also marketed as System 6; Macintosh computers (68k and PowerPC) System 7: 1991 System 7.5.1 was the first to refer to itself as Mac OS; Mac OS 7.6 was the first to be branded as "Mac OS" Mac OS 8: 1997 Macintosh computers Mac OS 9: 1999 Mac OS X/OS X/macOS: Mac OS X Public Beta: September 13, 2000 May 14, 2001 Code name Kodiak; Mac OS X 10.0
Mozilla Firefox 1.5 on Windows: hold Alt, press access key; Mozilla Firefox before version 14 on Mac OS X: hold Control, press access key; Safari 3 or earlier on Mac OS X: hold Control, press access key; Camino : hold Control, press access key; Opera 12 and lower: press and release ⇧ Shift+Esc, then press access key