My Monitor Randomly No Signals

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Thelordsninja

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Jan 9, 2013
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I have a pretty new gaming build. Most parts are only a few months old It worked fine for awhile, but now I am having serious problems. At first, my monitor would only no signal when playing games, but now it happens randomly even when I am surfing the web.

The Problem: My monitor will either turn black and display *No signal* OR the screen will display color lines and then go black and display *No Ssignal*. In both cases my desktop tower will make a loud buzzing noises and it appears to be coming from my graphics card fan.

Note: When I do manage to get onto a game without my monitor blackscreening, my GPU runs the game at maximum settings just fine. So it is 'working'

I have tried:
-Replacing the RAM (Went from 4gb's to 8gb)
-I have checked the computer temperatures (They appear normal)
-Uninstalling all ATI drivers (From Controal Panel & Driver Cleaner) and Reinstalling.

My specs:
(A few months old) 1080P Full HD 22'' TV
(A few months old) AS Rock 970E3 Motherboard
(A few months old) AMD Phenom II x4 965 BE Processor
(A few months old) Corsair 650 TX Power supply
(New) 2x 4gb G.SKILL Ripjaws ram
(I bought this used) Radeon 7700 Graphics
 
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TenPc

TenPc

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Jul 11, 2012
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Check the power cord on the monitor and the plug on the powerboard, they both should be firmly seated in their plugs, sometimes the connection for the power plug (to the monitor) can be quite difficult to push in.

Check the resolution on your Control Display Panel utility, and set it to HD native mode.
 
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Thelordsninja

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The power cables are firmly plugged in, and the problem is still here. How do I set it to 'HD native mode'? I went to Control Panel>Display and checked all the settings, it isn't listed. I also checked AMD Vision Engine Control Center.

 
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Thelordsninja

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I do plan on doing that as a last resort, but I don't have another GPU lying around and they are expensive. This is the GPU I was considering. http://

The only problem is I don't have two six pin connectors to power it, so I will have to use molex 4-pin to 6-pin converters. Is that O.K?

 
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Thelordsninja

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Alright. Why not use a molex converter(s)? My power supply should be able to handle a 660ti by using two 4 pin molex to 6 pin connectors right?
 
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TenPc

TenPc

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Is this your motherboard? 970 Extreme 3
http://www.asrock.com/mb/AMD/970%20Extreme3/?cat=Specifications
CPU AM3 - AMD Phenom II x4 965 BE Deneb (125w or 140w)

Radeon 7700 -
■PCI Express 3.0 x16 bus interface
■DirectX® 11.1-capable graphics
■OpenGL 4.2 support

The motherboard PCIe slots are only PCIe 2.0 so you won't get the full value of your video card.
Don't set the video card to ultra high, just use medium settings only.



 
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Thelordsninja

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Wow! I didn't even take that into consideration when I bought it. It was my first build. That is not my motherboard though, this one is http://www.asrock.com/mb/AMD/970DE3U3S3/ ... I also have the AMD Phenom II x4 965 Be Denab 125w.

Edit: After looking up using 3.0 cards in 2.0 slots, I found that the performance difference is minimal, and certainly not bottle neck. It should only make a difference when using dual or quad GPU's.



 
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TenPc

TenPc

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I think it's all to do with the video card, it's only using partial its bandwidth and is not performing to the best of its ability, try a game with settings on medium.

You do have the 6 pin connector to the video card, a connector directly from the PSU and not via a mollex adapter?

Edit - Set your monitor to default settings and use the video card Display Center to adjust the settings for the PC, use in-game display options for game settings.
 
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Thelordsninja

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Jan 9, 2013
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Even with settings on low, the issue will still occur. My power supply didn't have an extra 6 pin, so I used a 1x molex to 6pin adapter to power my GPU.

 
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TenPc

TenPc

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"Even with settings on low, the issue will still occur. My power supply didn't have an extra 6 pin, so I used a 1x molex to 6pin adapter to power my GPU. " ..NOOOOO!!!!!!!!

You need the proper connector from the PSU to the video card, the molex adapter is a temporary measure. The video card cannot be on the same cable line as any other device when using the mollex adapter.

The PSU is not providing the proper v/a with the mollex, the video card will eventually sizzle itself. The mollex connector is designed for a hdd or at most, a video card that supports the 4-pin molex but using the 4pin to 6pin connector does not mean that you are filling all of the 6-pins, you may notice that 2 of the 6 pins have no metal connectors inside them.
 
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Thelordsninja

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Yes, one of the pins are missing on the 6 pin female part on the adapter. Am I going to have to replace my PSU? It has a 6+2 pin that is plugged into the 8 pin slot on the Motherboard. I could separate the 6+2 pin and plug it into the GPU, then plug a 4 pin molex to 8 pin on the motherboard. Would that be safe to do?

If so, which would be a good PSU? I looked up a few. Which of these if any would be the best?
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171057
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182263

 
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TenPc

TenPc

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You can't use a 12v connector on a vidoe card, they are different fittings as well as different v/a flow.
Don't go mix'n'match things that don't go together...kaboom!

You need the proper PSU with all the corerct cables.

The Rosewill PSU looks sweet, I prefer the non-modular types even though they got cables everywhere, it just seems easier to grab a cable line rather than having to add one after everything is already fitted into the case but is messy with cables all over the place. You can't have your cake and eat it, too.
 
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