Monitor loses signal when I begin playing a game.

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joewill85

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Oct 7, 2016
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I've looked at a lot of similar questions and none of the solutions seem to work for me. Here is the situation:

I can start up any game and it runs fine as long as I stay within the menu. However, as soon as I start a new game or load a saved game the monitor will lose signal either during loading or within about 15 seconds of gameplay. I recently upgraded my entire system with the exception of the power supply, which is barely 2 years old. I never had an issue like this prior to upgrading the system. My specs are as follows:

Seasonic M12 II 620W Bronze PSU
AMD FX 6350 CPU
XFX RX 470 GPU
8 GB GSkill DDR 3 Sniper RAM at 1866 Mhz
ASUS 970 Pro Gaming MB
WD 1 TB 7200 RPM HDD

I've suspected a driver issue might be at fault but I've tried two different versions and the exact same issue occurs. I removed the newest version using DDU prior to rolling back the drivers. I replaced the GPU the day after I got it because I thought that might be the issue. I'm at a complete loss as to what to try at this point.

One last note that may be helpful. Most of the time when the monitor loses signal I can still hear the game audio in the background and the computer remains running.

Update I started The Last Remnant up and it opened in 1280 x 1024. I hit the wrong button and started a game before changing the resolution and it started up. When I reopened the game and changed the resolution to 1920 x 1080 the monitor shut off. My monitor does support this resolution natively.

Thanks in advance.
 
Solution
greens
I can understand that, it really doesn't make sense from that standpoint, but all your symptoms clearly point to PSU.

Its like the only thing that makes sense though, honestly. Especially this bit here:
One last note that may be helpful. Most of the time when the monitor loses signal I can still hear the game audio in the background and the computer remains running.

The fact that you can still hear the the game, its certainly your GPU crashing, and that pretty much only happens due to bad power.

Wattage ratings are kind of a mix of how many amps your pulling at a set voltage.
It could be that the slight increase in wattage is just putting your PSU over the amps its able to handle and still give good clean power.
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joewill85

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Oct 7, 2016
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Unfortunately I don't have another PSU laying around. Any idea why this would all of a sudden fail after upgrading parts? Is there software I can use to test the PSU to some degree?
 
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greens

greens

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Jan 27, 2012
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Yeah, if you run games and your display shuts off, you have a bad PSU :p

Unfortunately the only way to truly test this is to ensure that the 12v line maintains its voltage through its entire amp range. Whats happening is when your GPU pulls the amps it needs from your PSU, the voltage drops and it causes a display driver crash. Your monitor turns off, but the rest stays on.

Go to a big box store and buy a really good 600W PSU, if you still have problems, you can always return it for a minor restocking fee.
 
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joewill85

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Oct 7, 2016
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Well I've got nothing to lose so I'll give that a shot and report back either way. Any recommendations? I got this Seasonic specifically due to its reputation, but maybe I got a dud. Thanks for the help!
 
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greens

greens

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Jan 27, 2012
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WTF its a seasonic? That is one of the better brands out there!

They should be able to send you a replacement.

Tell them you keep getting Display Driver crashed and has recovered errors since upgrading to their PSU, they will send you one i'm sure. It is a good brand.
 
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joewill85

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Oct 7, 2016
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That's the thing, the PSU is the only part that wasn't upgraded. I was running an HD 7850 and an old X4 Phenom CPU on this Power Supply without any problems. The CPU wattage increased by about 30 Watts but my understanding is that the 7850 and the RX 470 are fairly comparable in terms of wattage. That's why I don't understand why the PSU would all of a sudden become an issue. I don't think I'm overloading it, so if it's the problem that means it became defective after a hardware swap, which I just don't get.
 
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greens

greens

Splendid
Jan 27, 2012
3,773
7
26,965
I can understand that, it really doesn't make sense from that standpoint, but all your symptoms clearly point to PSU.

Its like the only thing that makes sense though, honestly. Especially this bit here:
One last note that may be helpful. Most of the time when the monitor loses signal I can still hear the game audio in the background and the computer remains running.

The fact that you can still hear the the game, its certainly your GPU crashing, and that pretty much only happens due to bad power.

Wattage ratings are kind of a mix of how many amps your pulling at a set voltage.
It could be that the slight increase in wattage is just putting your PSU over the amps its able to handle and still give good clean power.
 
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Solution
J

joewill85

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Oct 7, 2016
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Well I'll go grab another PSU in the meantime and see if I get SeaSonic to give me a replacement unit. Thanks again.
 
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joewill85

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Oct 7, 2016
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It was the PSU. Got a Corsair CX 750M and everything works fine. I've got an RMA going on the Seasonic. Thanks!
 
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