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Optiplex 755 Internal Speaker Not Working - Dell Computers & Internet

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Download from Dell Suport the R64900.EXE driver. It's workerd for me.

Posted on Oct 24, 2012

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  • Dell Master
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you might have to clean the dust from your computer dust causes static which causes your computer to overheat and all sorts of problems

be sure to wear an anti static earth strap before touching anything inside your computer try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the CPU central processing unit and your SOUND CARD dust causes static to build up in a computer causing it to overheat any many other problems

hope this helps you

Posted on Mar 29, 2012

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Posted on Jan 02, 2017

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Im in the philippines, just want to ask where to buy i/o panel of dell optiplex 755, because i have one but was recently damaged.


I used google to search for i/o panel of dell optiplex 755 and got his link http://www.discountelectronics.com/product?gclid=CKTSgfHdscECFeHm7AodD1wA3w&product_id=7297&product_model=18

Oct 15, 2014 | Dell Optiplex 755 Desktop Desktop Computer...

2 Answers

Mic input microphone


right click the speaker on the right side go to properties add advanced options add mic slider uncheck the mute

Nov 11, 2013 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Audio card; which kind is in optiplex 755


Du?an Macejko,

ADI1984 Integrated Audio The OptiPlex 755 HDA audio implementation uses the HDA 1.0-compliant digital bus from the ICH8 and the Analog Devices ADI1984 HDA codec.
The Analog Devices codec provides the following:
  • Analog inputs for line-in and mic
  • A single amplified stereo output connected to front headphones
  • A line level output connected to back line-out
  • A mono output for optional internal speaker

    Thank You,
    Dell-Jesse L
    Dell Social Media and Community

Feb 07, 2013 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Optiplex 755 blinking amber light, simple solution, I'm no IT professional.


If the power light is blinking amber, the computer is receiving electrical power, but an internal power problem might exist.A power supply or system board failure has occurred. Try to isolate the problem by removing or disconnecting all cards, i.e. video, sound cards and disconnecting CD/DVD and hard drives.

Oct 20, 2012 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

I have optiplex 780 and it`s internal speaker not working with win7 till connect jack or any kind of external speaker. from speaker tray (right click) speakers not pluged in.


Update the drivers for windows 7.
http://www.delltechcenter.com/page/Optiplex%20780%20Windows%207%20Driver%20CAB#fbid=YWz2sjykvpF

Sep 06, 2011 | Computers & Internet

1 Answer

Is SATA ii compatible with Dell 755?


Yes the Dell Optiplex 755 desktop uses SATA II connections.

Jan 06, 2010 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Does a firmware update for dell optiplex 755 optical drive fix intermittent rebooting issue


dell 755 drivers page

your looking at the wrong firmware

optiplex 755 current bios version: A10 date 6/20/2008

for the CD Drive need to open device manager and check

what brand and model you have for dell used 2 DVD drives
b0a7e29.jpgsony and teac

use the correct firmware on drive, if not the drive will be killed.
if unsure open case and look for name/model on sticker of drive

Jun 23, 2009 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

Configuring dell optiplex 755 sff


on the back of each device their should be a jumper on the right side next to where the ribbon cable plugs in. Remove the jumpers and replace them into the slot thats for "Cable Select" Their should be a picture on the top of the device if they aren't labeled. You can also put the jumper for 1 as "Master" and the other as "Slave"

Apr 20, 2009 | Dell 16X DVD±RW Serial ATA Internal Drive...

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