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Keyboard controller failure ,2 bips ABC in green D

Keyboard controller failure 2 bips abc in green D in yellow iv tried pressing the start button 10 secs with no cables atached and then remove the battery but how reset then?? thnx for all if some body can help i apreciate i cant acces to set up i need to put the chasis is neccesary??

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Two beeps generally means RAM failure, so it's better for you to check the RAM or replace using another from your friend or you can try your's to another PC so that you an make sure which one is the fault. If this isn't the problem, then you need to clean the motherboard and its components, blow away all the dusts, and reinsert everything after cleaning, you can use brush or rubber eraser to clean the tip of the ram or pci cards etc.... Good luck..

Posted on May 10, 2010

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Posted on Jan 02, 2017

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Keyboard controller failure ,2 bips ABC in green D in yellow ,iv tried pressing the start button 10 secs with no cables atached and then remove the battery but how reset then?? thnx for all if some body...

Have you tried with another Known, good & working keyboard? If not, try it first. If the problem persists, then you have to clear the NVRAM using the jumper (if a mere re-seat of the CMOS coin-cell didn't work). To locate the jumper, consult the user manual. Also, re-seating the memory modules (RAM modules) is known to have resolved this.

Mar 16, 2010 | Dell Dimension 2400 PC Desktop

1 Answer

Iv tried yo many keyboard even dell and mouses and nothing at first says keyboard controller failure

The problem could be caused due to system setup lockup. Kindly disconnect all the devices from the back of the computer including the power cord. Press and hold the power button for 10 seconds.

Open the system chassis and remove the cmos battery to reset your motherboard.
The following link would help you do the same.

Once you have reseated the cmos. Connect the monitor keyboard and power cord and start the computer and check for the problem

Thanks for using fixya

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