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Help on VGA HDTV setup

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Old 07-27-2007, 08:07 PM   #1  
How can anyone watch standard def?
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Default Help on VGA HDTV setup

I just bought a VGA cable to hookup HD from my computer to my TV. When I hook up the VGA cable alone and restart my computer it shows the startup, the windows XP screen, and my graphics card startup screen. As soon as it gets to windows it says invalid format. I have an NVIDIA GeForce 7950 GT graphics card. I go to Video and TV settings in the graphic card settings, then to "Change the signal or HD format", and the only options I have are S-video, and component. I select component and it makes it so the S-video display doesn't come up. I then change to the VGA channel and it says no signal. Any ideas that I can fix this? I have an Olevia 32" LCD HDTV that does support VGA.
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Old 07-27-2007, 08:51 PM   #2  
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Look in your manual and set the resolution of your PC to one that the display will handle. Also be sure to set the refresh rate to 60 Hz not optimum.
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Old 07-27-2007, 09:28 PM   #3  
How can anyone watch standard def?
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Hmm, did both of those and it's still not working. Been looking all over trying to fix this problem. My graphics card has two DVI slots, the converter is DVI to VGA, and the cable is a male-male VGA cable. Like I said it works fine until it hits the windows desktop startup screen. It works fine with S-video, but I want the VGA for HD. It does say on there website PC Input-HDMI, VGA-1360 x 768 @60 Hz , does this mean I have to have it in 1360 X 768? And if so how do I do that? It won't let me with the S-video cable hooked up, and when I plug in the VGA cable I get no signal.

Last edited by Badno; 07-27-2007 at 09:37 PM..
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Old 07-27-2007, 11:01 PM   #4  
How can anyone watch standard def?
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Default Help with HDTV VGA

I recently bought a VGA cable to hook up HD from my PC to my HDTV. The problem I am having is that it keeps saying invalid format whenever I try to switch over to the VGA. I have tried several different resolutions, and my refresh rate is 60 hertz. I've been looking around for solutions for about 3 hours now with nothing that has helped. It starts up just fine, it shows everything up to the windows desktop then says invalid format.

I have an Olevia 32" LCD HDTV, my graphics card is NVIDIA GeForce 7950. The card itself doesn't have a VGA plugin, it has 2 DVI plugins, and I have the DVI to VGA adaptor.
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Old 07-27-2007, 11:47 PM   #5  
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Quote:
Originally Posted by Badno View Post
Hmm, did both of those and it's still not working. Been looking all over trying to fix this problem. My graphics card has two DVI slots, the converter is DVI to VGA, and the cable is a male-male VGA cable. Like I said it works fine until it hits the windows desktop startup screen. It works fine with S-video, but I want the VGA for HD. It does say on there website PC Input-HDMI, VGA-1360 x 768 @60 Hz , does this mean I have to have it in 1360 X 768? And if so how do I do that? It won't let me with the S-video cable hooked up, and when I plug in the VGA cable I get no signal.
What is the make and model of the DVI to VGA converter?

Give a link to the website concerning the max resolution that you discuss please.

The only resolution you can send over S-Video is 640x480,
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Old 07-28-2007, 03:21 AM   #6  
How can anyone watch standard def?
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http://www.olevia.com/products/specs.aspx?pid=232V
This is the link to my TV. And as far as the make and model of the DVI to VGA converter it came with my graphics card. It's an Nvidia GeForce 7950 graphics card.
http://www.nvidia.com/page/geforce_7950
This is the link to the graphics card I have.
I don't want to use S-video, and I'm sure that's the max resolution I can get. For some reason though it will let me select 1024 x 768 resolution with this S-video plugged in, in my NVIDIA settings. The big thing is getting the VGA cable to work in HD.
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Old 07-28-2007, 08:53 AM   #7  
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First I think the 1360x768 may be a misprint. The normal resolution is 1366x768. The specs say PC resolutions up to 1360x768 which leads me to believe 1024x768 or 800x600 may be possible. I assume you have tried all of these various resolutions, but you might try 75 Hz refresh as well.

I don't think there is anything wrong with the adapter because you are able to see the boot up screen. They are normally 640x480 at 60 Hz refresh, standard VGA.

Some nVidia cards are notorious for being difficult to get to work with HDTVs, so it may be that your current drivers do not have the required resolutions. You might check for newer drivers. Also powerstrip could assist you in getting the required resolutions. Here is a discussion that may help: Hooking Up A PC to A HDTV

Your combination is definately not going to be plug and play, so it may take a bit of work to get it going.
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Old 07-28-2007, 11:07 AM   #8  
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HI i have an olevia 32" LCD HDTV. I connect my laptop via VGA to the tv. I use the 1280*768 resolution to display. This seems to work fine. I have tried using both the monitor+notebook display option and the monitor only display option. both seems to work fine. you might also try doing the extend my desktop to the monitor option and see if it works. good luck
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Old 07-28-2007, 11:17 AM   #9  
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It may be helpful for you to give us the different resolutions you have tried. Also list the resolutions possible with that card.
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Old 07-28-2007, 12:07 PM   #10  
How can anyone watch standard def?
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First I would like to say thanks for the help everyone. This is an extremely frusterating problem I have, although I know I can fix it. I agree that the VGA cable is fine, as you said it gives me the bootup. I just downloaded the latest driver for my card 2 days ago. I have tried 800x600, 1024x768, and also the 640 x 480. I believe these were the only ones I have tried. I'm currently not at home so I can't post the highest resolution my card can go. The only refresh rate it lets me set it at with the S-video hooked up is 60.

If all else fails I could bring back the VGA and exchange for a component cable, but the VGA is preferable.

I will also check out the link you provided me with.

One thing I was wondering about is that my TV has VGA and VGA/Component display channels. I have tried both, but I only get the startup screen on the VGA channel. Any idea what this might be?

Thanks again

Last edited by Badno; 07-28-2007 at 12:09 PM..
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Old 07-28-2007, 12:32 PM   #11  
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If you are trying to get the VGA going, I would disconnect the s-video cable all together. It may be telling your video driver something. I'm not sure about the VGA/Component display channels as to what it is. Do you know of a link to the manual for that TV?

/Also do you have a monitor connected as well as the HDTV?
Your card specs state: Integrated HDTV encoder provides analog TV-output (Component/Composite/S-Video) up to 1080i resolution, so I'd pursue this route as well. You may need a component cable adapter for this. Composite and s-video will not be HD, so don't bother with those.

Last edited by rbinck; 07-28-2007 at 12:39 PM..
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Old 07-28-2007, 12:38 PM   #12  
How can anyone watch standard def?
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Not right off hand. That would be helpful though, I can check this link and see if it does have a manual. What I do to test it is when I change the resolution I unplug the S-video and then restart, but so far no luck. Keeps giving me the "Invalid Format". But yeah I will check around this website for my HDTV and see if I can find an actual manual.
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Old 07-28-2007, 12:45 PM   #13  
How can anyone watch standard def?
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http://www.olevia.com/support/downloads.aspx
Here is the link to the manuals that come with the HDTV. My question is which one do I download? lol
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Old 07-28-2007, 01:06 PM   #14  
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There is something wrong here and I believe I have identified it.

It IS the adapter that is causing the problem. Because he is using a DVI to VGA ANALOG ADAPTER (DVI is both analog and digital depending on the age of the equipment)- They cost $15.

A DVI DIGITAL to VGA ANALOG conversion requires a "transcoder" that runs between $325 and $500.

So tel me which of these "adapters" are you using"

The $15 Adapter

http://www.cablestogo.com/product_list.asp?cat_id=2801

The $325 to $500 transcoders:

http://www.ramelectronics.net/html/D...converter.html

ttp://www.ramelectronics.net/html/40-881.html

You are going to have the same problem with DVI to Component. A simple cable WON't do it. Your PC is DIGITAL and the Component Connection is Analog. You will need an expensive transcoder that changes digital to analog.
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Old 07-28-2007, 01:27 PM   #15  
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Quote:
Originally Posted by Badno View Post
Not right off hand. That would be helpful though, I can check this link and see if it does have a manual. What I do to test it is when I change the resolution I unplug the S-video and then restart, but so far no luck. Keeps giving me the "Invalid Format". But yeah I will check around this website for my HDTV and see if I can find an actual manual.
Is there anyway you can get a monitor to connect while you are trying to get the computer set up to work with the TV? I have a feeling your s-video setup is not staying when you reboot. Also you might try booting in the safe mode and see if that will allow you to completely boot up on the TV. Then see if the nVidia software will allow you to set a HDTV resolution. You may not get this going without a monitor to get the drivers set up initally.

I noticed there is a forum on the nVidia site. You may need to ask over there.
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