The invention discloses a multi-functional computer fault diagnosis instrument. The multi-functional computer fault diagnosis instrument comprises a
central processing unit, an
LED display unit, a VGA interface unit, a RJ 45 interface unit, an
audio power amplifier module, a BNC interface unit, a
USB&PS / 2 interface unit, an LED
flashlight unit, a
voltage comparator unit, a PCI gold finger interface, a keyboard, a
lithium battery
power supply unit, an electric leakage detection gold finger, a DC input interface, a
power module, a
wireless &
infrared receiver, an audio input interface, an audio output interface, a
loudspeaker, AUDIO row needle interfaces and 2P row needle interfaces. The multi-functional computer fault diagnosis instrument can not only detect a computer host fault, but also can detect whether a computer display, a sound, an earphone, the keyboard and a
reticle are good or not, detect whether a computer
microphone, a computer
sound card, a monitoring camera and the
wireless &
infrared remote controller output signals or not and detect whether a
computer case shell has electrical leakage or not, and the
computer maintenance work becomes more relaxing and rapid.