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  2. 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

  3. Dell OptiPlex - Wikipedia

    en.wikipedia.org/wiki/Dell_OptiPlex

    Dell OptiPlex Series 4 DT, SFF and USFF Chassis. OptiPlex (a portmanteau of "optimal" and "-plex") is a line of business-oriented desktop and all-in-one computers made for corporate enterprises, healthcare, the government, and education markets.

  4. Failure of electronic components - Wikipedia

    en.wikipedia.org/wiki/Failure_of_electronic...

    These can manifest only at specific environmental conditions, high clock speeds, low power supply voltages, and sometimes specific circuit signal states; significant variations can occur on a single die. [9] Overstress-induced damage like ohmic shunts or a reduced transistor output current can increase such delays, leading to erratic behavior.

  5. 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 ...

  6. Power outage - Wikipedia

    en.wikipedia.org/wiki/Power_outage

    Power outages are categorized into three different phenomena, relating to the duration and effect of the outage: A transient fault is a loss of power typically caused by a fault on a power line, e.g. a short circuit or flashover. Power is automatically restored once the fault is cleared. A brownout is a drop in voltage in an electrical power ...

  7. Electrical fault - Wikipedia

    en.wikipedia.org/wiki/Electrical_fault

    In an electric power system, a fault or fault current is any abnormal electric current. For example, a short circuit is a fault in which a live wire touches a neutral or ground wire. An open-circuit fault occurs if a circuit is interrupted by a failure of a current-carrying wire (phase or neutral) or a blown fuse or circuit breaker.

  8. DTX (form factor) - Wikipedia

    en.wikipedia.org/wiki/DTX_(form_factor)

    Comparison of the form factors for motherboards ATX, μATX (micro-ATX), DTX, mini-ITX and mini-DTX The DTX form factor is a variation of ATX specification [ 1 ] designed especially for small form factor PCs (especially for HTPCs ) with dimensions of 8 × 9.6 inches (203 × 244 mm). [ 2 ]

  9. Talk:Dell OptiPlex - Wikipedia

    en.wikipedia.org/wiki/Talk:Dell_OptiPlex

    Citation needed for: "Many suffer onboard CPU fan controller problems requiring a total motherboard replacement?" I have a dead GX280 that won't post, with an out of control CPU fan that sounds like a jumbo jet taking off sitting right here, next to me at work while my coworker wastes her time messing with it and I type on a backup computer...personally I don't require any additional info...