Dell computer is making the error sound frequently

Using a VGA splitter to connect a laptop to a Devant TV can work, but it's important to note a few things:
1. **VGA Splitter Compatibility:** Ensure that the VGA splitter you're using supports the resolution and frequency of both your laptop and the Devant TV. Some cheaper splitters might not support higher resolutions, resulting in a lower quality display.
2. **Connection Setup:** Connect the VGA output from your laptop to the input of the VGA splitter. Then connect the two outputs of the splitter to the VGA inputs on the Devant TV.
3. **Settings on Laptop:** On your Mac, go to System Preferences > Displays. Ensure that the display settings are configured to extend or mirror the display to the external monitor (TV). You might need to detect displays or choose the appropriate resolution settings here.
4. **TV Input Source:** On your Devant TV, select the correct input source where you've connected the VGA cable.
5. **Signal Quality:** Be aware that using a VGA splitter might degrade the signal slightly, potentially impacting the quality of the display on both screens.
Remember that VGA is an analog signal and may not deliver the highest quality resolution compared to more modern digital standards like HDMI. If both your laptop and TV have HDMI ports, using an HDMI cable might result in a better quality connection.

To connect three monitors to a Dell Optiplex 7010, you can use the built-in DisplayPort (DP) ports and the VGA port. Here's how you can set it up:

1. Check the available video ports: As you mentioned, the Dell Optiplex 7010 has two DisplayPort (DP) ports and one VGA port. Make sure all three monitors support at least one of these connection types.
2. Connect the first monitor: Use a DisplayPort cable to connect the first monitor to one of the DP ports on the Optiplex 7010. Ensure that both ends of the cable are securely plugged in.
3. Connect the second monitor: Connect the second monitor to the other DisplayPort (DP) port on the Optiplex 7010, using another DisplayPort cable.
4. Connect the third monitor: Since the Optiplex 7010 has only two DP ports, you'll need to use the VGA port for the third monitor. Connect the third monitor to the VGA port using a VGA cable.
5. Configure display settings: Once all three monitors are connected, you'll need to configure the display settings to extend the desktop across all monitors. Right-click on the desktop and select "Display settings" (Windows) or "System Preferences" -> "Displays" (macOS). From there, you should be able to set the arrangement and orientation of the displays.

Note: When using multiple monitors, it's important to consider the graphics capabilities of your computer. The Optiplex 7010 might have limitations on the maximum resolution and refresh rate it can support across multiple displays. Check the specifications of your specific Optiplex 7010 model to ensure it can handle three monitors simultaneously.
If you encounter any issues or limitations, you may need to consider using additional hardware, such as a DisplayPort splitter or an external graphics card, to connect and support three monitors.

Sometimes it is difficult to answer a question without asking very basic questions. Using a DVI and a VGA ports will allow you to have screens with different things showing on them. If you use a splitter, the two monitors connected to the splitter will show the same thing on both screens. Is this what you want? I use a splitter at church to have Powerpoint on the main computer monitor, the program then shows on the screen on the wall and the TV monitor, as well as the second monitor at the computer. My splitter occasionally acts up, and I found that unplugging it and plugging it back in makes it work for another couple months. But a splitter for only two monitors is very cheap, no switch box involved.

Hi

For this one you need VGA enable TV if your TV have VGA port then, bring the one VGA cable from market and plug the Tv to Pc, enble to VGA mode in you TV. you get the screen you TV now enjoy to watch the TV, & do the work in big screen.


Cheer

if you want to set up a dual tv monitor system using via pc as a source you will need a VGA splitter usually 2 or more output. now how are you going to connect the 2 monitor and PC to the VGA splitter. first make sure your tv monitor is supported by service input for PC unit. then prepare the accessories needed. the VGA splitter and VGA cable. sample image for VGA splitter VGA cable or connector how are you going to hook up the splitter and VGA cable to the tv monitor and PC

• you need 3 vga connector and 1 splitter to connect a dual monitor system.
• connect one end of the vga connector to the pc unit and the other end to the input port of splitter.
• now the 2 remaining vga connector connect to the output of splitter either of the port, then the 2 end wire you must connect to the input port ( pc service port ) of the 2 tv monitor. make sure you set up the right input either with the remote or at the tv unit to recognized the pc source.
• you almost done the connections now at this point plug the tv monitors, plug the dc adapter supply of the vga splitter and lastly turn on the pc unit to view movies. i hope it will help you just ask me if you have further questions thanks for choosing the fixya.

Sounds like the the monitor detect line is causing your issue. The Hitachi CP-X250 has VGA in & out. Hook the Dell to the VGA out port of the projector.

you will have to change the settings in the control panel to an extended desktop once you have this lead connected click start control panel display change display settings you should a no 1 and a no 2 with detect and identify keep an eye on the television screen when you select the number tabs this may vary depending on your operating system when you select the no 2 tab this should be the extended tesktop always click apply after making any changes
Click start control panel administrive tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! red x right click select reinstall drivers hope this helps
http://majorgeeks.com/SiS_UniVGA5_Graphics_Driver_For_Windows_7_d6264.html

The computer will only see either one monitor or the splitter itself as the monitor, it won't recognize them separately or be able to put different data onto each (if indeed it is a true "splitter")
It's like the output from a satellite receiver. Just because you put a cable splitter on it so that you can have 2 TV's hooked up, both will be on whatever single output is coming out of the receiver, it doesn't let you watch 2 different shows, one on each screen. You'd need another receiver for that.
Likewise, if you want to see 2 monitors on the computer, there has to be 2 separate video outputs (some cards provide more than 1 output, but since you got a splitter, I am assuming this isn't the case for you).

You just need to lower the screen resolution thats all.

You don't need a TV tuner card but you do need to adjust settings for your graphics card.

If its NVIDIA then use the DUALVIEW For ATI there is a similar thing but I don't use ATI so you would have to figure that one out yourself.

If I understand correctly you are using the same cable for both. Goto radio shack or mabe one of the big discount stores and buy a Dual cable splitter and two  cables (the length that you need) One house cable will go into the splitter . Coming out of the slitter will be two cables one is to go to the cable box and the the is to go to you computer modem.