Question about Samsung SP-R4232 42 in. Plasma HDTV

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Using external monitor with Vista

I'm trying to connect my laptop to a new TV I bought to use the TV as an external monitor. The laptop is an Alienware Area-51m 7700 and the TV is a Samsung which was just purchased a month ago, and the laptop is running on Vista. The TV only has VGA (or HDMI) input and the laptop only has DVI so I'm using a DVI to VGA cable to connect the two. OK, so that's all the background, here's the problem: When I hook them up Vista detects the new display OK and gives me the option of using the laptop only, TV only or both to display so I chose both for now. When I then go to PC mode on the TV, I get no output and then the TV goes to standby. When I press "Source" again on the remote to waken the TV, I see my laptop's output flash on the screen for one brief second and then the screen goes dark and says "No Signal", then after a few seconds goes back to standby mode. So, any suggestions? Like I said, my laptop detects the display and whenever I go back to PC mode I see the output for a split second, so they're connected, it's just...not working properly. Thanks for any help you can give

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  • patrickj Feb 13, 2008

    Same problem on Gateway MX6956 Notebook with external Acer X221W monitor. However, our old Philips monitor fires right up without issue. Bios, Video and Monitor Drivers are all up to date. Spent 5 days on this POS monitor, and Acer's support is email only. I will post what they say when I get it. It is not an issue with the computer according to Gateway...they said contact Acer. So I did and am waiting.

  • Anonymous Jul 14, 2008

    I'm having the same problem as Tipp



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The problem with adapters is they dont always pass all information thru,,try changing the screen resolution on the laptop down a little

Posted on Dec 01, 2007


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I have the connection for my laptop to tv what do I do after I connect the two

On your laptop keyboard it should be a key to switch to external monitor. You may need to press the FN key plus a key to switch to external monitor.
If you are still having problems, try to include the make, model# of laptop and the cable or device you're using to connect the laptop to the TV.

Best of luck to you.

Nov 03, 2013 | Televison & Video


Trying to connect computer to LCD TV and get no signal?


If you are trying to connect computer to LCD TV and get no signal, as a first thing do the following:

Double check cable and connection. If possible test different connections. Try using VGA, DVI or AV, depending on availability on computer and TV.

Ensure that Video drivers on computer are properly installed, and that the video adapter is working properly.

If you are using a laptop, ensure that you do not need to use a function button to enable the external display, this is pretty common on laptops.

If you are using a desktop, go to display properties, find the windows where you get the picture of two monitors, and ensure that both monitors are enabled.

On Vista try also using the 'Identify Monitor' button on Top. It is located on same properties panel as the two monitor, the main Display Property windows. From the same window you can also modify display resolution, as explained later.


If still no luck, then it may be a problem of synchronization between TV and computer, in that case try the following.

  1. Turn off TV.
  2. Disconnect TV power cord.
  3. Restart computer.
  4. With Computer already on, plug back and restart TV.

....If that does not work.

On computer, go to display properties.

First try changing computer resolution. The TV max resolution may not be available on computer. In that case try lowering down to the smallest 16:9 resolution available on computer graphic settings (usually LCD TVs are 16:9), and if that does not work, set resolution to 800x600, just to test (picture proportion will be distorted, or you get squared box on a 16:9 TV).

If that does not work, open Display Properties. In Display Properties access Advanced, and then Monitor settings (XP). On Vista choose Personalize in control panel, then Display Settings, and go straight to Monitor Settings, in there again go to Advanced.

Under the advanced monitor settings you will find a tab called monitor, in there you find the monitor frequency. Try setting this to 50Hz, if that does not work try 100 HZ, that is the output frequency of your TV. If you get unsupported frequency, revert value to normal.


on Jan 17, 2010 | Televison & Video

1 Answer

My laptop is vga,so i have bought a vga cable,and a converter box with HDMI cable. My samsung series 5 tv will not pick up the laptop. i have tried all the options available but it just says check devices...

Wouldn't it be NICE to know what laptop you are referring to

Oh well...........maybe one day

By factory default settings the display should automatically show in the external VGA monitor. (TV. Whatever)

Your laptop has at least 3 display options;
1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY

By factory default settings the display should automatically show in the external VGA monitor. (TV. Whatever)

Press, and hold the Fn key down, and at the same time tap once on the Display Toggle-Over key.
Which key is the Display Toggle-Over key?
Dunno. Laptop manufacturer and model number wasn't stated.

(One of the F keys at the top.
Acer = F5
HP = F4
Lenovo/IBM = F10
Dell = F8, unless it's Alienware - F6)

Did that? That's how it worked on your friend's TV?
Then your TV is the problem.
Settings I assume. NOT a TV tech.


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never plug in hdmi when on you may burn your hdmi port

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I bought the Panasonic 3D Viera TC-P42GT25 wi fi ready tv, and it said in the manual that I can connect my PC to the TV and use the TV as a monitor for my laptop. I bought a wireless keyboard/mouse, and a...

looking at you laptop keyboard, you should be able to find a key that has a small picture of a monitor on it... normally will be one of the F or numeric keys... find this key first, then activate the external display function using that key (maybe by pushing the F key and the Key we found) typically for each time you click to activate that function, your computer will switch between three modes: internal + external, internal only or external only... good luck

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You may need to use the S-video cable for video. Make sure video mirroring is disabled on the powerbook. Also, make the external monitor the primary display by dragging the menu bar to it in Displays preferences (Mac OS X) or the Monitors control panel (Mac OS 8 and 9).

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Try the external monitor option is the display settings. See if that works for you. If not contact acer tech support and they will definetly be able to help you with the issue.

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