Monitor unable to receive input from graphics card

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Teagan Johner

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Aug 9, 2015
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4,510
My computer crashed while I was playing WoW and when I turned it back on, the monitor was unable to receive input from the GPU (swapping between HDMI and Analog settings looking for a signal and then entering sleep mode). I tested the monitor on another computer and it works fine, so then I pulled the GPU from an older system and that systems larger power supply (500W) to run it and the VGA monitor (as my monitor does not have a VGA hookup) and that seemed to work fine aside from needing appropriate drivers which I forwent as the swap was only for testing purposes. Also hooking the VGA monitor into the MOBO directly also works. This leads me to believe the problem was with my ATI Radeon 7660, which I had been meaning to replace anyway. I purchased a new AMD Radeon R9 390 and installed it and the drivers with the 500W power supply still in there, only to have the same problem with the monitor not receiving a signal. All power cables are hooked up properly, one 8 pin and one 6 pin and lights on to verify. Putting my old GPU in with the new power supply does not solve the problem, either.

MOBO - intel i7 ipisb-ch2
Pwr Supply - Dynex 500W
RAM - 8GB hynix
New GPU - ASUS AMD Radeon R9-390
old GPU - ATI AMD Radeon 7660
Monitor - SyncMaster S27B370

Heart = bro\ken
 
Solution
MarkW
We have a Power Supply List. It breaks down power supplies into Tiers 1 through 5. We only recommend that people buy power supplies from Tiers 1 or 2. Here is your Dynex power supply entry in that list.

Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.


A-TOP technology
Apevia
Apex (SUPERCASE/ALLIED)
Artic / Ace (They're the same company)
Aspire...
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MarkW

MarkW

Judicious
Dec 7, 2009
6,308
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32,960
We have a Power Supply List. It breaks down power supplies into Tiers 1 through 5. We only recommend that people buy power supplies from Tiers 1 or 2. Here is your Dynex power supply entry in that list.

Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.


A-TOP technology
Apevia
Apex (SUPERCASE/ALLIED)
Artic / Ace (They're the same company)
Aspire (Turbocase)
ATADC
ATRIX
Broadway Com Corp
CIT
Coolmax
Deer
Diablotek
Dynapower
Dynex

99% odds, it is your power supply. We do not even want you to power that thing back up. It is that bad.

And if your power supply is not supplying steady, smooth power to your hardware, it is not going to work as you expect it to. Some things simply will not work, and other things will die quick. Its just a bad situation all around.

Get yourself a better power supply. Something reliable. And then see what works. I think you will see a night and day difference.

Minimum Power Supply Requirement : 750 watt
I would recommend one of these to you. They are the best made power supplies you can get.

SeaSonic M12II 850 SS-850AM 850W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Full-Modular Active PFC FULL-modular Power Supply New 4th Gen CPU Certified Haswell Ready $119.99

SeaSonic M12II 750 SS-750AM2 750W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Full-modular Power Supply New 4th Gen CPU Certified Haswell Ready $94.99
 
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Solution
MarkW

MarkW

Judicious
Dec 7, 2009
6,308
0
32,960
The easiest way to answer that question is to run Display Driver Uninstaller, which does a better job of cleaning out everything related to the video card. and then install new video drivers. The icons below are links to the DDU page and to AMD video driver pages. When DDU asks to go into Safe Mode to do its thing, click on yes, and when it gets there, select the top button of the three it offers you.

If it fixes the problem, it was the drivers. If it does not, then its motherboard related.


 
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T

Teagan Johner

Reputable
Aug 9, 2015
6
0
4,510


I did, sorry. Yes I ran the DDU and even did a full system restore (after this and a chipset update were attempted and tested). After trying the other graphics cards and seeing they no longer even show up in the device manager I am fairly certain it is indeed, a motherboard issue. Likely the PCIE slot itself, although the vid cards are still getting power.. possibly power intake on the mobo end as well. Either way, as it appears the motherboard will need to be replaced

 
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MarkW

MarkW

Judicious
Dec 7, 2009
6,308
0
32,960
Ok.. In this next image, lets make sure that you video card is in the red slot that has the blue arrow pointing at it on your system. I know your system probably does not have red slots, but I use this image because the red slots stand out and make what I am trying to get across to people easier. If that is where your video card is now, change it to the second one. And see if anything changes.

126bgwk.jpg
 
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