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Question posted by freddymartinez on December 4th, 2014

Dell Optiplex 790 Internal Speakers

The Internal Speakers on my Desktop don't seem to be working. Everything appears to be set up correctly, but i can't hear the actual audio. Any idea?

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Answer #1: Posted by DELLShawnB on December 5th, 2014 7:48 AM

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DELLShawnB

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Hi freddymartinez,

The internal speaker should automatically disable if an external speaker / headphone set is plugged into an audio jack so I would suggest first removing any external devices attached to test.

Winthin Windows 7 the speaker can be configured by clicking Start >> Control Panel >> Hardware and Sound >> Manage Audio Devices in the Sound section. You will be presented with a list of all audio playback devices (i.e., speakers) connected to the system.

Right-click the internal speakers device listing (the default name is usually "Speakers" or "Internal Speakers") and select Enable/Disable >> Apply >> OK

We have some great guides with more comprehensive troubleshooting options at the link below.

Sound Problems in Microsoft Windows

http://www.dell.com/support/article/us/en/19/SLN146399/EN

How do I resolve Audio Issues on my Dell Computer?

http://www.dell.com/support/article/us/en/19/SLN289883/EN

Thanks,

Shawn B

Get Support on Twitter @DellCaresPro

http://www.dell.com/learn/us/en/uscorp1/corp-comm/dell-social-media

Related Dell OptiPlex 790 Manual Pages

View - Page 1

Dell OptiPlex 790 Setup And Features Information About Warnings WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Front And Back View Figure 1. optical drive (optional) 7. ...

Technical Guidebook - Page 3

... Integrity Light 8 USB Connectors (6) 3 Network Connector 4 Network Activity Light 5 Serial connector 6 Line-out Connector 9 Display Port Connector 10 VGA Connector 11 Line-in/Microphone connector 3 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 5

V 1.6 DESKTOP COMPUTER (DT) VIEW FRONT VIEW 1 Optical Drive 2 Optical Drive Eject Button 3 Power Button, Power Light 4 USB Connectors (4) 5 Microphone Connector 6 Headphone ...3 Network Connector 9 Display Port Connector 4 Network Activity Light 10 VGA Connector 5 Serial connector 6 Line-out Connector 11 Line-in/Microphone connector 5 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 6

DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 DESKTOP COMPUTER (DT) VIEW Number Name Number Name 1 Internal speaker connector(INT_SPKR) 13 PCI connector(SLOT3) 2 Front IO connector(FRONTPANEL) 14 PCI-e 4x connector(SLOT4) 3 Thermal sensor connector(THRM_2) 15 Thermal sensor connector(THRM_1) 4 SATA 0 ...

Technical Guidebook - Page 7

DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 SMALL FORM FACTOR COMPUTER (SFF) VIEW FRONT VIEW 1 Optical Drive 2 Optical Drive Eject Button 5 Microphone Connector 6 Headphone Connector 3 Power Button, Power Light 4 USB 2.0 ...

Technical Guidebook - Page 8

...P1 power connector(POWER) 12 LPC debug connector(LPC_DEBUG) 2 System fan connector(FAN_HDD) 13 Battery connector(BATTERY) 3 Internal speaker connector(INT_SPKR) 14 P2 power connector(12V_PWRCONN) 4 Buzzer(BEEP) 15 Processor connector(N/A) 5 PCI-e 4x connector(SLOT2)... Memory connector(DIMM2) 11 Intrusion switch connector(INTRUDER) 8 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 9

... 16 Line-in/ Microphone Connector 17 Display Port Connector 18 VGA Connector 19 Serial Connector 20 USB Connectors (5) 21 Network Connector 22 Link Integrity Light 9 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 14

...AND REMOVABLE STORAGE MT Bays: 5.25-inch bay (External Optical) 2 Hard Drives Supported (Internal and External) 2 Optical Drives Supported 2 Interface: SATA 2.0 3 SATA 3.0 1 3.5" Hard... USFF 1 1 (slim-line) 1 (slim-line) 1 1 1 1 1 1 2 2 1 1 1 1 X X X X X X X X X X X X X X X X X X X X X X X 14 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 16

See chassis diagrams section for headphones or speakers MT DT SFF Optional FH card 4 Front, ... optional PCIex1 card Video: VGA DisplayPort Audio: Line in for microphone Line in for microphone or stereo Line out for port/connector locations USB 2.0 (1 internal on CPU 1GB AMD RADEON HD 6450... height card, DT supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 17

...ALC269Q High Definition Audio Codec Internal Dell Business Audio Speaker Dell AX210 2.0 Desktop Speakers Dell AX510/AX510PA Flat Panel Soundbar Speakers MT DT SFF USFF Integrated on system board Optional Optional Optional KEYBOARD AND MOUSE Dell USB Entry Keyboard (Ruby) with optional palmrest Dell Multimedia Pro Keyboard Dell Smartcard Keyboard Dell USB Optical Mouse Dell Laser Mouse MT...

Technical Guidebook - Page 23

...kHz sample rates Signal to Noise Ratio Analog Audio Dolby Digital THX Digital out (S/PDIF) Audio Jack Impedance Microphone Line-In Line-Out Headphone Internal Speaker Power Rating 98 dB DAC outputs, 90...NIC) NOTE: MT supports full height card, DT supports low profile card. DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - INTEGRATED INTEL® 82579 GIGABIT1 ETHERNET LAN 10/100/1000 ...

Technical Guidebook - Page 30

...HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only)... For hard drives, GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 30 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 31

actual capacity varies with preloaded material and operating environment and will be less. 31 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 HARD DRIVES (CONT.) 3.5" 500GB SATA 7200 RPM HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference...

Technical Guidebook - Page 32

...RPM HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only) ... hard drives, GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 32 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 33

... HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only) ... hard drives, GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 33 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 34

DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 HARD DRIVES (CONT.) 2.5" 500GB SATA 7200 RPM HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical ... 1 For hard drives, GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 34

Technical Guidebook - Page 35

... HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only) Spin... drives, GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 35 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 36

... SATA HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only) Spin ...GB means 1 billion bytes ; actual capacity varies with preloaded material and operating environment and will be less. 36 DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK -

Technical Guidebook - Page 37

... HDD Capacity (bytes) Dimensions inches (W x D x H) Interface type and Maximum speed Internal buffer size Average Seek Time Rotational Speed Logical Blocks Power Source Power Consumption (reference only) ... hard drives, GB means 1 billion bytes ; DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - actual capacity varies with preloaded material and operating environment and will be less. 37

Technical Guidebook - Page 39

DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - W x H x D) Weight (max) pounds/ kilograms Interface type and speed MT 148.2mm(6in)/42mm (2in)/ 190.5 (max) 750g SATA 1.5Gbit/s Disc Capacity Standard Internal...and speed SATA 1.5Gbit/s SATA 1.5Gbit/s Disc Capacity Standard Standard Internal buffer size supplier dependent supplier dependent Access Times (typical) supplier ...