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Legolas_

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14 years ago

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Legolas_

83 Posts

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59529

January 14th, 2013 02:00

No Keyboard Detected, 3 beeps.

Hi folks,

here's my issue now. During POST hear three beeps, then it writes "No Keyboard detected". I see both keyboard and mouse have light off, on the desktop, the lights are on. I tried another keyboard, in multiple USB, but it doesn't work.

Thx all.

  • Legolas_

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    Posted January 15th, 2013 01:00

    From bad to worst.

    I tried clearing CMOS, now a new error message adds up to the rest:"CMOS Checksum bad".

    I can't figure it out how to solve this mess of problems.

    Support needed down here :(

  • Legolas_

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    Posted January 15th, 2013 02:00

    Ok, i'll try this way.

    Thx for your help, check for an update! ;)

  • Tesla1856

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    Posted January 15th, 2013 02:00

    Sounds like motherboard might be going out, so CMOS reset has to work instead. 

    Pull battery, and leave reset jumper on for a while.

    Install new battery, Reset jumper to normal, bring machine up, go into BIOS right away, select BIOS Defaults.

    Dell Rockstar

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  • Tesla1856

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    Posted January 16th, 2013 01:00

    See page 114 in PDF Aurora R1 Service Manual.

    Dell Rockstar

    Microsoft Windows and Apple iOS Developer (Retired)
    - Like many of you, I can appreciate a good game-engine.
    - I answer questions here, but I'm not a Dell employee.
    - Consider giving posts you like a "thumbs-up"
    - Posting models-numbers and software versions speeds trouble-shooting.
    - Click "Mark as Accepted Answer" on any post that answers your question best.

  • Legolas_

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    Posted January 16th, 2013 01:00

    Bad news.

    I switched to a new battery, things are the same. However I'm not pretty sure how to clear CMOS. What do you mean exactly with "leave jumper on"?

    Thx for your support again.

  • Legolas_

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    Posted January 16th, 2013 02:00

    Hi Tesla,

    there could be an error on manual?

    I read:

    2. Reset the current password and CMOS settings:

    3.Locate the 3-pin CMOS or password-reset jumper on the system board a. (see “System Board Components” on page 14).

    Remove the jumper plug from the CMOS or password-reset jumper b. pins 2 and 3.

    Place the jumper plug on the CMOS or password-reset jumper

    c. pins 1 and 2 and wait for approximately five seconds.

    Remove the jumper plug and replace it on the CMOS or password reset d. jumper pins 2 and 3.

    actually i have pins 1 and 2 plugged as default, which is opposite from what described in the manual.

    My pins default position is the same as shown in this picture

    www.ebay.com/.../150795154130

  • Legolas_

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    Posted January 16th, 2013 05:00

    By the way.. it doesn't work. Should i consider to replace my MoBo?

  • Tesla1856

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    Posted January 16th, 2013 12:00

    By the way.. it doesn't work. Should i consider to replace my MoBo?

     
    Remove anything non-essential (USB, extra cards & drives, etc.)
    - Maybe even install a lower-power but known-good video card.
    Remove and re-attach all connectors, DIMMs, etc.
    No CPU, MB, or GPU OverClocks should be activated. All stock speeds.

    Dell Rockstar

    Microsoft Windows and Apple iOS Developer (Retired)
    - Like many of you, I can appreciate a good game-engine.
    - I answer questions here, but I'm not a Dell employee.
    - Consider giving posts you like a "thumbs-up"
    - Posting models-numbers and software versions speeds trouble-shooting.
    - Click "Mark as Accepted Answer" on any post that answers your question best.

  • Tesla1856

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    Posted January 16th, 2013 12:00

    there could be an error on manual?

    Possibly.

    Dell Rockstar

    Microsoft Windows and Apple iOS Developer (Retired)
    - Like many of you, I can appreciate a good game-engine.
    - I answer questions here, but I'm not a Dell employee.
    - Consider giving posts you like a "thumbs-up"
    - Posting models-numbers and software versions speeds trouble-shooting.
    - Click "Mark as Accepted Answer" on any post that answers your question best.

  • Legolas_

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    Posted January 17th, 2013 01:00

    Ok, thx for your advice, i'll do it as soon as possible, at best later this evening.

    Check for an update. ;)