GPU card spinning, but No signal to Monitor Plz Help

saik0jay

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Apr 7, 2014
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Hey all.
I have an old custom computer that seems to run like it normally should, but
I have an issue at the moment,
Here's the story:



Before this problem occurred, whatever game I played randomly led me to BSOD, and lead me to reformat the computer.
After I reformatted, the BSOD still would randomly come with no luck whenever I play any game. BSOD doesn't show up whenever I browse the internet. I reinstalled all the drivers and updated everything. Also I reset BIOS back to default settings with no overclocking Then I read the BSOD and led me to open up the case to reseat the video card and ram, and got the dust out of the way. After I reseated them, this problem came up with no signal to the monitor.

The computer turns on like it normally should: GPU fan spins, but there is no signal to my monitor, which leads to a black screen.
However, I noticed the cpu heat sink fan also continuously stops and attempts to spin again after each second.
Checked the wires, reseated the ram, checked the power plug to my CPU heatsink fan and reseated the plug, and reseated the video card, dusted everything, and unfortunately to my motherboard, there is no onboard video.


Which leads me to a confusion to what exactly is wrong. Is it the video card, PSU, motherboard, or the heatsink fan. I need a 2nd opinion to this situation. What are the odds to the causes of this problem?

I'm out of ideas to this problem

Here are my specs:

Gigabyte GA P35-DS3L
Intel Core 2 Duo E4400
Nvidia Geforce 8800 GT
4 GB RAM
Stock CPU heatsink
Onboard audio


Thank you in advance.
If more info is needed please reply.
 
Solution
If the monitor is working and the wire from the monitor to gpu is working that means your gpu is not working.

The reason the gpu is not working could be a bad current or not enough power from the psu. Possibly its possible for the gpu to not work while the gpu fan is working.

If the problem is the psu perhaps that explains the weird cpu fan behaviour.

If you read the tutorial i linked to and everything seeks right then the psu iis my GUESS.

B_S

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Mar 3, 2014
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Your current problem sounds like it was caused by something you did when switching things around inside the case. Are all components placed and connected correctly on the motherboard? Is the GFX card connected correctly to the PCIe slot? Are all power cables from the PSU connected correctly?

The problem you had earlier sounds like it could be caused by a problem with your PSU. Or maybe components running to hot.

The problems could maybe also be cause by bad wires or bad connectors from the PSU to motherboard.
 

saik0jay

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Apr 7, 2014
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Yep everything is connected. How do I check if the wires are bad?
 

B_S

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Mar 3, 2014
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Buy or borrow new wires, if the new one works then there was something wrong with the old ones.

Same thing with the PSU.

If all the wires are ok, and connected properly. Then one of your components are broken.

The CPU fan doesn't work properly. So it's broken and needs to be replaced. Or somthing is wrong with how the fan is powered.
 

saik0jay

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Apr 7, 2014
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Can you tell me which part is more likely to be broken? The monitor is connected with the adapter to the video card and it worked fine the other day. I'm not sure about the power supply, but the everything seemed to be powered up, except the heatsink's fan and no signal to the monitor. Ram seemed to be fine as well. So which one is more likely to be broken? Motherboard? GPU? Heatsink fan? or the power supply? Open ended question what's more likely to be broken?
 

B_S

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Mar 3, 2014
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Since two things are not working, it would be more likely it is one of the components that are connected to both those components. So either PSU or motherboard.

Since other things on the motherboard, like the RAM, is working. Then I would say PSU is most likely to be faulty.
"Black screens" are often caused by not enough power from PSU to power the GFX card.

It's also possible that several components are broken at the same time. You can troubleshoot by excluding things that might be a problem. For example connect your monitor to another PC, if it works you then know that the monitor is not the problem.

However the CURRENT problem, with a black screen, did not exist before you started "reseating" things on the motherboard. I'm not sure what that means or how you "reseated" the components. So this "reseating" might also be a cause of the problem.

It would help if you explained in more detail how things are located right now on your motherboard.

If you could post a picture of your motherboard. And explain how things are installed at the moment that would help. Also if with the help of this image you could explain what you have done when you reseated things.

Perhaps even easier than this is if you read through these two stickied tutorials. They will show pictures and details about everything you need to know about installing things in a PC:

http://www.tomshardware.co.uk/forum/274745-31-step-step-guide-building

http://www.tomshardware.co.uk/forum/261145-31-perform-steps-posting-post-boot-video-problems
 

saik0jay

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Apr 7, 2014
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The motherboard and PSU seemed to be working fine, because everything else was working fine. Just these 2 seemed to be odd: it said no signal to to monitor and the monitor was connected by an adapter. The GPU was spinning but not sure if you would say it's out and the heatsink fan for the CPU spinned randomly by spinning and then attempts to turn off. The fan picks on and then off back and forth. So which one of these more likely?

GPU? CPU fan? monitor? I don't know how the PSU would be out if the GPU is spinning and all. How do I check if it's out?
 

B_S

Reputable
Mar 3, 2014
255
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4,860
If the monitor is working and the wire from the monitor to gpu is working that means your gpu is not working.

The reason the gpu is not working could be a bad current or not enough power from the psu. Possibly its possible for the gpu to not work while the gpu fan is working.

If the problem is the psu perhaps that explains the weird cpu fan behaviour.

If you read the tutorial i linked to and everything seeks right then the psu iis my GUESS.
 
Solution