Question about Dell Optiplex 755 Ultra Small Form Factor Intel Celeron Processor 430 1.8GHz, 512K, 800... PC Desktop

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Dual monitors can't extend desktop

I have a DVI splitter, connecting 2 monitors to my 755
with both connected, when i click "identify monitors" under the display settings in control panel, both are listed as "1"
if i select the 2nd monitor and check the "extend desktop..." box and click apply, it auto-unchecks the box, so both monitors remain as mirrors of each other...
any ideas why i cant save the extend desktop setting???

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Connecting Two Monitors
Use the cable adapter to connect a VGA monitor and a DVI monitor to the DVI-I connector on the back panel.


When you connect two monitors, the video driver will detect this connection and activate the multimonitor functionality.
This is the only way to enable extended display. If you use a standard splitter and connect two DVI montors, the display will only be mirrored.


Detailed documentation is available at http://support.dell.com/support/edocs/systems/op755/en/UG/HTML/ultrasma.htm


Hope this helps! Please rate your feedback!

Posted on Mar 02, 2009

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Dual monitors t3516


Is it just like this with NO graphics card installed?

http://products.pacificgeek.com/emachines_t3516_celeron_d_3_20ghz_512mb_120gb_cdrw_dvd_xp_1013070674.php

If so, Not happening.

The I/O area is to the left side. (Input/Output area)
In this rectangular area you see;
1) PS/2 mouse port, and PS/2 keyboard port, at the top.
2) Orange port below them.
3) Black port below it.
4) Down below all of the above is the blue VGA port.

If you do not have a graphics card, your monitor is plugged into this blue VGA port.
If so you are using Integrated Graphics. Another term used is OnBoard graphics. ON the motherBOARD.

Do Not try to use a splitter cable, and run two monitors off of this VGA port. Ain't happening.

See the four long slots at the bottom of the computer? The bottom one has the Ethernet adapter card in it?
A graphics card, (Video card. Same/same), is installed on the motherboard, and the end of it sticks out one of those 3 unoccupied slots.

Each of those slots are known as Expansion Bay Slots.
When you choose what slot you want, you remove the Expansion Slot cover, for that slot.

My sources indicate the motherboard is an Intel D101GGC motherboard,

http://www.e4allupgraders.info/dir1/motherboards/socket775/D101GGC.shtml

There are 2 white PCI slots at the bottom.
There is 1 black PCI-Express x1 slot above them.
There is a longer black PCI-Express x16 slot above it.

The PCI-Express x16 slot is for a graphics card. It is the best graphics card slot on your motherboard.
(The white PCI slots are lame. The PCI-Express x1 slot, is NOT used for a graphics card)

Suggest you use a PCI Express graphics card for your computer, and run two monitors at the same time.

From here it depends on what the two monitors are. Do you have two monitors that use a VGA cable?
Example of a VGA cable, and a VGA connector,

http://en.wikipedia.org/wiki/VGA_connector

Or do you have a monitor that uses a VGA cable, and a monitor that uses a DVI cable?
Example of DVI connectors,

http://en.wikipedia.org/wiki/Digital_Visual_Interface

Or do you have one monitor with a VGA cable, and a monitor that has a DVI cable?

Post in a Comment as to the monitor manufacturer name, and model number.
[ For example I am using an HP 2009m (20 inch widescreen), and a 26 inch RCA EN-V HDTV, as dual monitors ]

This is an example of a very economical PCI Express graphics card, that will run dual monitors,

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130755

You can use a monitor with a VGA cable (Blue port), and a monitor with a DVI cable.

You can use two VGA monitors, with using a VGA to DVI adapter, for one of the monitors.
You can use two DVI monitors, with using a DVI to VGA adapter, for one of the monitors.

Already have a graphics card, and two monitors connected to it?

1) Right-click on an empty area of your desktop screen.
2) At the bottom of the list left-click on Properties.
3) In the Display Properties window, left-click on the Settings tab.

4) Left-click on the rectangular monitor icon, that has the 2 in it.
5) Go below to the left, and left-click on the empty square next to-
Extend my Windows desktop onto this monitor
6) Go below to the right, and left-click on Apply.
7) Go below to the left, and left-click on OK.

Your desktop screen is on your second monitor.

Need guidance past this post in a Comment.
Regards,
joecoolvette

Jun 09, 2012 | PC Desktops

1 Answer

Dual screen wont work


Kevin,

1) You cannot plug a monitor into the VGA connector, on the back of the desktop computer, AND plug a second monitor into a DVI connector, on the back of a desktop computer.

In otherwords you can only plug ONE monitor into the motherboard.

[ The I/O area on the back of the desktop computer, is the Input/Output area. This rectangular area has connections for Input devices, and Output devices.

Examples such as a Mouse, Keyboard, (INPUT), VGA devices, (VGA monitor - Output), USB devices, audio devices, (Speakers - Output. Microphone is an Input device), and so on.

The I/O area has a rectangular metal shield. (Thin metal plate)

Connecting a device in the I/O area, is connecting it directly to the motherboard.

Example of a VGA connector, and VGA cable,

http://en.wikipedia.org/wiki/VGA_connector

Example of a DVI cable, and DVI connector,

http://en.wikipedia.org/wiki/Digital_Visual_Interface

(There are several variations of DVI connectors.
Scroll down ]

To use dual monitors you need a graphics card also.
Graphics card with a VGA connector, or DVI connector. (Or both)

Monitor with VGA cable, plugs into the I/O area on the back of the desktop computer. (Plugs into the motherboard's graphic chipset)

The second monitor plugs into the graphics card's DVI connector, or VGA connector.

[ Just an example,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1416091&CatId=3669

On the image of the graphics card on the left;
Go under it to the subheading - + 11 larger images and views.

There are 7 views shown. One is the carton the graphics card comes in. (View 2 from the left)

Going from the left side, count over to the 5th view. Left-click on the 5th view. Shows you the 'business end' of the graphics card.

Starting at the left side it is the HDMI connector, then VGA connector, then DVI connector.

Note*
YES, you can plug a VGA monitor, AND a DVI monitor, into this type of graphics card, and have Dual monitors ]

FIRST:
Computer on, Windows running; Put the Installation disk (CD) in the optical drive's tray. (CD/DVD drive)
Load ALL software.
Drivers, and 'Control Panel'.

Graphics card software loaded, close all windows, go back to your desktop screen. Turn the computer off normally.

Unplug the computer from power. Open the computer case.
FOLLOW Anti-Static Precautions.
(Don't know Anti-Static Precautions? Post back in a Comment)

Physically install the graphics card. Close the computer case.
Plug the VGA cable of the Primary monitor, into the VGA connector in the I/O area, on the back of the desktop computer.

Now plug the DVI cable of the Secondary monitor, into the DVI connector on the graphics card.

(The main monitor you use is the Primary monitor. The second monitor you are going to add, is the Secondary monitor )

Plug the computer into power. Both monitors plugged into power, turn them BOTH on.
Turn the computer on.

When Windows loads you will see a display on the Primary monitor.
Your desktop screen.

Now Right-click on an empty area of your desktop screen.
In the list at the bottom, Left-click on - Properties.

In the Display Properties window that comes up, left-click on the -
Settings tab.

You will see two rectangular icons. 1 and 2.
1 is the Primary monitor. 2 is the Secondary monitor.

Left-click on the Secondary monitor icon.
Go down towards the bottom/middle on the left.

Left-click in the empty square to the left of -
Extend my Windows desktop onto this monitor

Go down to the bottom Right. Left-click on Apply.
Go down to the bottom Left. Left-click on OK.

Your desktop screen will now be on the secondary monitor.


When you open your internet browser, (Yahoo, or Google, or MSN, or Mozilla Firefox, etc), you have to DRAG the screen onto the secondary monitor.

(Let's use Yahoo for an example. Yahoo will be on your Primary monitor.
You need to drag Yahoo onto the Secondary monitor)

Which direction you drag, is up to which direction the two monitors are sitting, on your computer desk.

The way the monitors are sitting in Display Properties; the Primary monitor is on the Left. ( 1 )
The Secondary monitor ( 2 ) is on the Right.

This is the way the two monitors should sit on your computer desk.
(There is a way to switch them around, however)

On your Primary monitor, (Still using Yahoo as an example), go to the RIGHT side. See the blue frame going around the screen?

When you bring the mouse cursor ON the blue frame, it turns into a Double-Sided arrow.
It is difficult at first to keep the cursor as a double-sided arrow.

Move too far to the right, it turns into the usual pointed cursor.
Move too far to the left, and it turns into the usual pointed cursor.
have to keep it on the blue frame.

WHILE the mouse cursor is a Double-Sided arrow, left-click, and hold the left mouse button down. Now drag the screen to the Right.
(Move your mouse to the right)

Keep dragging until the Yahoo browser is on both monitors.

Different size monitors? The display will not be the same size, on both monitors.

[ I use an HP 2009m, 20-inch widescreen monitor, as a Primary monitor, and an RCA EN-V, 26 inch HDTV, as a Secondary monitor.

I have my desktop on the Primary monitor, and FixYa, (Firefox browser), on the Secondary monitor, right now ]

If this is not your problem please state in a Comment.
Also state additional questions in a Comment.

Regards,
joecoolvette

May 10, 2012 | PC Desktops

1 Answer

How do i find my question


Just click on your username,

http://www.fixya.com/support/t11655926-third_cable

http://www.newegg.com/Product/Product.aspx?Item=N82E16824005146

http://www.lg.com/us/support-product/lg-W2040T-PN

On this page, I would like you to click on the red English, to the left of the PDF icon, and to the left of the heading - Owners Manual

A small window will come up on the right. Make sure there is a green dot in the small circle, to the left of - Open with.
Plus, to the right in the box, it states - Adobe Reader (default)

If not click in the small circle to the left of Open with.
(And use the down arrow on the right side of the box. Click on Adobe Reader, if it is not in the box)

Now go to the bottom, and click on OK.

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on OK, it may take up to 30 seconds before you see the first page come up.

In the Bookmarks menu to the left, click on - Connecting the display.
Now use the Down Arrow at the top of the PDF file, and go to Page 9.

(Using the page number box at the top of the PDF file. The actual manual page number is 8 )

Here you are shown the 3 cables.

AC-IN is the power cord.

D-SUB is a VGA connector. Should be Blue in color.
Example of a VGA connector, and VGA cable,

http://en.wikipedia.org/wiki/VGA_connector

VGA is Analog.
A computer puts out a digital signal, but has to be converted to Analog, for a VGA monitor.

This actually slows the graphics process down.

DVI-D:
Digital Visual Interface.

This is for a monitor that uses a digital signal, and is not a VGA analog monitor. Graphics are best using DVI.

http://en.wikipedia.org/wiki/Digital_Visual_Interface

There are different types of DVI connectors, and the function for them.
1) DVI-I single link
2) DVI-I dual link
3) DVI-D single link
4) DVI-D dual link
5) DVI-A

The most common types today will be DVI-I single link, and dual link.

(Observe the chart showing the various connectors, under the bold subheading - Connectors )

If you have a DVI connection on the back of your computer, it is BEST to use a DVI cable from the monitor, and connect to it.

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 11, 2012 | PC Desktops

1 Answer

Using the splitter i can not get windows 7 to recognize the other monitor and enable multiple monitors


Hello there,
As you've said you're using a display splitter, the result will be identical screen on both monitors. splitters main function is to split VGA signals into N of outputs. where N=number of outputs. no matter how many monitors you attach to your splitter, the windows only recognize monitors attached directly to your video card. Windows requires a video card that has two or more output VGA or DVI outputs to get second extended monitor or display link device.
If you're video card has two outputs follow the instruction below.
1. plug the VGA or DVI other cable on the unused port. 2. power on the second monitor. 3. right click on the desktop, click screen resolution.
pcsyke_68.jpg

4. click the display in gray, Multiple Displays: it depends on the user.
pcsyke_69.jpg
5. I selected extended display. 6. apply and ok.
pcsyke_70.jpg

This spreads your desktop over both monitors and lets you drag items between the two screens. This is how most people use two monitors, and it's the default setting for desktop computers. you can use your mouse to grab the title bar (the top portion) of a window and drag it to your new display.

Hopefully this information is helpful. Thank you for using FixYa..

Jul 17, 2011 | PC Desktops

1 Answer

TRYING TO CONNECT TWO MONITORS FOR EXTENDING USE


1) You have to have a graphics card with two monitor ports.

You Cannot use one port on a graphics card, and the VGA, or DVI port on the motherboard of the computer.
BIOS will only let you use the graphics card, or the Integrated Graphics.

2) Using a 'splitter' cable results in very bad graphics on two monitors, or no graphics at all.

3) With a graphics card installed that has two monitor ports on it, connect the monitors to the graphics card.

[ The graphics card can have a VGA port, and a DVI port. Or the graphics card can have two DVI ports.

VGA = Video Graphics Array
Photo of a VGA port,

http://en.wikipedia.org/wiki/File:SVGA_port.jpg

Photo of a VGA cable,

http://en.wikipedia.org/wiki/File:Vga-cable.jpg

DVI = Digital Visual Interface

Information about DVI showing a DVI cable, and connector examples for the DVI port on a graphics card,

http://en.wikipedia.org/wiki/Digital_Visual_Interface ]


4) Turn the two monitors on once they are connected to the graphics card.
Turn on the computer.

5) Windows loaded, right-click on an empty area of the desktop screen.

6) In the list go to the bottom, and click on Properties

7) Click on the Settings tab.

8) You will see two monitor icons.
One icon has a square with a 1 in it.
The other icon has a square with a 2 in it.

The 1 monitor icon is used to represent your Primary monitor.
The one you have been using.
As you can see the 1 monitor icon is sitting to the Left.
This is how your Primary monitor should be sitting on your computer desk.

The 2 monitor icon is used to represent your Secondary monitor.
The one you are going to add.
As you can see the 2 monitor icon is sitting to the Right.
This is how your Secondary monitor should be sitting on your computer desk.

Left-click on the 2 monitor icon.
Go below in the Display Properties window, and view where it states -

Extend my Windows desktop onto this monitor

There is an empty square to the left of it.
Left-click in the empty square.

Now go below to the Right, and click on - Apply
Finally go below to the Left, and click on - OK

Your desktop screen will now be on your Secondary monitor.

Whatever is on your Primary monitor, has to be drug over to the Secondary monitor, when you are on the internet, or a program. (Such as a game)

Go to the blue frame on the Left side of the Windows screen.
When your cursor turns into a double-headed arrow STOP.

You'll find it's a little tricky your first time, keeping your cursor into the position where it turns into a double-headed arrow.
With the cursor in a double-headed arrow, press the left mouse button down, hold it down.
Drag the monitor screen to the Left.

Keep dragging until the window on your Primary monitor is on your Secondary monitor.
It's helpful you'll find to have two of the same size monitors.

I have found occasion where when using the internet on two monitors, that I had to Restore Down the screen, THEN drag it over to the Secondary monitor screen.

(Icons at the top right of the monitor screen.
Minimize ( - ), .......Restore Down/Maximize, ...........Red X

Then I Maximized the screen


For further questions please state in a Comment.
(Believe upper right of your page. - Comment

Nov 02, 2010 | PC Desktops

3 Answers

How can we connect two moniters to one cpu


To have and use 2 monitors at the same time, you need a video card with a dual VGA outputs.

To use 1 monitor at the time you can buy a VGA switcher, to switch between the 2 monitors.

Best of Luck
Sabre

Feb 18, 2010 | ViewSonic PC Desktops

1 Answer

We have Dell OptiplexGX745 smallform factor desktop computers that we need to run two monitors.


If your Dell Optiplex GX745 came with the ATI Radeon X1300 graphics card, that has One - DVI graphics port, and One - VGA graphics port, it's no problem.

This link shows an ATI Radeon X1300, and the two above mentioned graphics ports,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5550932&CatId=28

(Please scroll down to the larger photos for more detail.
The Radeon X1300 graphics card in your computer, is a Low Profile graphics card. It will not look exactly like the one shown.

Low Profile means shorter in height. Your graphics card is shorter in height, in order to fit in your SFF computer case. {Small Form Factor}

The longer white connector shown on the left side of the view, is a DVI port. (Technically it's a Dual DVI port)

The shorter blue connector shown on the right side of the view, is the VGA port.

1) If one of your monitors has a DVI connector plug, simply plug it into the DVI port.
If the other monitor also has a DVI connector plug, you will need an adapter to plug it into the VGA port.

2) If both of your monitors have a VGA connector plug, one will plug into the VGA port on the graphics card.
The other will need an adapter to plug into the DVI port, on the graphics card.

This link shows an adapter for connecting a monitor with a DVI connector, to the VGA port on a graphics card,

http://www.directron.com/dviadapter.html

The adapter to connect a monitor with a VGA connector, to a DVI port on the graphics card is opposite of this.
[ I have found them at Radio Shack.
This = Expensive! $14.99
Not advertising for Radio Shack, or the above website in the link]

NOTE*
Use care when selecting the adapter you need.

A monitor with a VGA cable connector has the Male pins.
Your adapter must have the VGA Female sockets.
The DVI side of the adapter must have the Male pins.
It goes into the Female socket holes on the graphics card.

Same with a monitor that has a DVI cable connector.
The adapter must have Female DVI socket holes.
The other side will have Male VGA pins.

If your ATI Radeon X1300 only has One - graphics port, I Do Not advise using a splitter.
This is an adapter cable that has a connector on one end, and splits into two cables.

The graphics quality will be poor.

If you have No graphics card the situation is worse. This is Onboard, or Integrated Graphics.
(OnBoard. On the motherboard)

Using a splitter cable will result in very poor graphics.

How to tell if your Optiplex GX745 only has Integrated Graphics?
Look at the back of the computer. Come down from the audio ports. (Green and Blue)

Look under the USB ports.
The Blue VGA port is the Integrated Graphics port.

If you have an ATI Radeon X1300 graphics card, you will see a blue VGA port in an adjacent slot, also.

(Your computer can have Integrated Graphics, and a graphics card.
You CANNOT use the Integrated Graphics port, and a graphics port on a graphics card, At The Same Time!
It will Not work)

Once the two monitors are attached.

1) Turn both monitors on.
2) Turn the computer on, let Windows load

3) After Windows has loaded, Right-click on any empty area of the desktop screen.

4) Go to the bottom of the drop down menu, and Left-click on Properties

5) There are tabs across the top. Left-click on the
Settings tab.

6) You will see two rectangular icons. These icons represent monitors.

The one on the left side with the white border around it, is your Primary monitor. The main monitor you have always had.

The grayed out icon on the right side represents a Secondary monitor. This is for the second monitor you plugged in.

Note how the two monitor icons are sitting.
Primary on the left, Secondary on the right.
This is how your monitors should be sitting.

If it is Not, left-click on the Secondary monitor icon. Hold the left mouse button down, and drag it over to the left.

Now scroll down this window with your eyes.
Under the resolution settings you will see -

Extend my Windows desktop onto this monitor

There is a square box to the left of it.

Left-click in the square box. Go below to the right, and left-click on Apply.
Now go to the left, and click on OK.

Your monitors will now both be showing your desktop screen.

[Note* When doing this procedure, you have clicked on the Secondary monitor icon. Clicking on the icon activates it]

When you open the internet, or have a program going.
Go to the right side of the screen to the blue border,
of the Primary monitor.

When the mouse cursor turns into a double-headed arrow, hold the left mouse button down, and drag the screen to the right.

(You will note that the mouse cursor changes quite easily. It has to be double-headed in order for this to work)

If this direction does not work, go to the left side of the screen, drag to the left.

(You have to drag in the direction your monitors are actually sitting, in relation to each other)

Need some clarification, or have further questions? Click on Comment.

Jan 14, 2010 | Intel computers9: P3 Computer Computer...

1 Answer

How to connect 3 LCD monitors to a computer


Some cards can send 2 outputs that is split by the cable, which is connected to 2 monitors. Generally speaking though, most just split the image up

If you're not sure if your output supports multiple monitors off one output, it's almost certain it doesn't.
There is USB 2.0 to DVI, HDMI and VGA Multi-Display Adapter
resolutions of up to 1600 x 1200 Allows for effortless multitasking

Jan 05, 2010 | Dell DimensionTM E520 PC Desktop

1 Answer

How to connect Samsung 40" LCD tothe eMachine desktop T2615. It looks like there is only one connection for a monitor? The computer is about 6 years old.


Older LCD TV's have a variety of inputs, one of them being VGA, to connect to your PC. The problem seems to be that you either connect your PC to its own monitor, OR to the TV, but not both? If that's the case, you may have a couple of alternatives:
The most expedient one would be to get a VGA splitter cable; the other, more expensive: replace your video card with one that has dual outputs: either one with two DVI ports; one with one DVI port and one VGA port; or one with one DVI port and one HDMI port. As you can tell, there are several possibilities, depending on the connectors available on your TV.
Good luck!

Sep 08, 2009 | E-Machines eMachines Desktop PC

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