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  2. Why is my computer so slow? - AOL

    www.aol.com/products/blog/why-is-my-computer-so-slow

    Faulty Hardware Components: Any malfunctioning hardware component, such as a faulty motherboard, power supply unit (PSU) or peripheral device (e.g., mouse, keyboard), can cause slow performance or ...

  3. Power supply unit (computer) - Wikipedia

    en.wikipedia.org/wiki/Power_supply_unit_(computer)

    Entry-Level Power Supply Specification (EPS) is a power supply unit meant for high-power-consumption computers and entry-level servers. Developed by the Server System Infrastructure (SSI) forum, a group of companies including Intel, Dell, Hewlett-Packard and others, that works on server standards, the EPS form factor is a derivative of the ATX ...

  4. Power good signal - Wikipedia

    en.wikipedia.org/wiki/Power_good_signal

    The ATX specification defines the Power-Good signal as a +5-volt (V) signal generated in the power supply when it has passed its internal self-tests and the outputs have stabilized. This normally takes between 0.1 and 0.5 seconds after the power supply is switched on.

  5. ATX - Wikipedia

    en.wikipedia.org/wiki/ATX

    PS_ON# (power on) is a signal from the motherboard to the power supply. When the line is connected to ground (by the motherboard), the power supply turns on. It is internally pulled up to +5 V inside the power supply. [3] [19] PWR_OK ("power good") is an output from the power supply that indicates that its output has stabilized and is ready for ...

  6. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    Power supply may be bad Long continuous beep tone Memory failure Steady, long beeps Power supply bad No beep Power supply bad, system not plugged in, or power not turned on No beep If everything seems to be functioning correctly there may be a problem with the 'beeper' itself. The system will normally beep one short beep. One long, two short beeps

  7. Nonvolatile BIOS memory - Wikipedia

    en.wikipedia.org/wiki/Nonvolatile_BIOS_memory

    The memory battery (aka motherboard, CMOS, real-time clock (RTC), clock battery) [2] [10] is generally a CR2032 lithium coin cell.This cell battery has an estimated life of three years when power supply unit (PSU) is unplugged or when the PSU power switch is turned off. [11]

  8. Motherboard - Wikipedia

    en.wikipedia.org/wiki/Motherboard

    Power connectors, which receive electrical power from the computer power supply and distribute it to the CPU, chipset, main memory, and expansion cards. As of 2007 [update] , some graphics cards (e.g. GeForce 8 and Radeon R600 ) require more power than the motherboard can provide, and thus dedicated connectors have been introduced to attach ...

  9. Brownout (electricity) - Wikipedia

    en.wikipedia.org/wiki/Brownout_(electricity)

    A switched-mode power supply will be affected if the brownout voltage is lower than the minimum input voltage of the power supply. As the input voltage falls, the current draw will increase to maintain the same output voltage and current, until such a point that the power supply malfunctions or its under-voltage protection kicks in and disables ...

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