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Dell OPTIPLEX GX620 Keyboard Failure

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During POST I get error message: Keyboard Failure. Strike F1 to continue, F2 to run setup utility. This is both inane and funny at the same time, yet frustrating. I have tried all of the obvious solutions (try another keyboard, try kb on another PC, etc.). There are no PS/2 ports on this PC. I have tried resetting the BIOS to default settings according to documentation at mfr. Website. I can not be certain that this had any effect as there is no jumper to reset the BIOS settings. The motherboard has only two jumpers labeled RTCRST (real time clock reset) and PSWD (password reset).

Thanks in advance for any help that may be provided.

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2 Answers

  1. Did the OPTIPLEX also emitted a series of beeps during start-up? If you also heard a burst of three beeps followed by two beeps followed by four beeps, it means Keyboard Controller test failure. In layman term, the keyboard controller chip on the motherboard has failed.
    You have three options:

    1. Solder out the failed motherboard chip.
    2, Replace motherboard.
    2. Buy new computer.

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  2. Some motherboards have only TWO pins that are used to clear the CMOS. Therefore no jumper is normally installed. If your board is one such board you can simply temporarily short those two pins with a screw driver to clear the CMOS. Be sure to perform that operation with power unplugged.
    Look for two bare pins labeled clrcmos or similar.

    Did some incident lead up to this occurrence?

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