PC that turns on and off
Firestar5501
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dachiasse Posted messages 1932 Status Member -
dachiasse Posted messages 1932 Status Member -
Hello,
Recently, I changed the motherboard, the processor, the RAM, and added a graphics card to my PC. Since then, it powers on for a few seconds and then turns off, then powers back on, and so on.
The screen I connect it to doesn't seem to detect it, and I have checked the connections several times, but everything appears to be in place...
My processor is an Intel Core i5.
My graphics card is a Gigabyte GeForce GTX 1050 Ti.
My motherboard is a Gigabyte *B365M H* LGA1151/M.2/M-ATX *Cf8* *6606.
If you have any questions, feel free to ask, and thanks in advance for your help.
Recently, I changed the motherboard, the processor, the RAM, and added a graphics card to my PC. Since then, it powers on for a few seconds and then turns off, then powers back on, and so on.
The screen I connect it to doesn't seem to detect it, and I have checked the connections several times, but everything appears to be in place...
My processor is an Intel Core i5.
My graphics card is a Gigabyte GeForce GTX 1050 Ti.
My motherboard is a Gigabyte *B365M H* LGA1151/M.2/M-ATX *Cf8* *6606.
If you have any questions, feel free to ask, and thanks in advance for your help.
8 answers
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It's not always clear to me the way you explain things. If I guessed correctly, you removed the GPU and connected the TV and the monitor to the motherboard's VGA or HDMI outputs, but that doesn't work either. It's normal that it doesn't work. Why? Because your CPU, the i5-9400F, doesn't have an IGP (integrated graphics processor). Therefore, the video outputs on the motherboard are not connected to a graphics processor. That's why they can't function.
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Misnaming things adds to the misery of the world (Albert Camus) -
What is the exact model of your Core i5?
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To misname things is to add to the misery of the world (Albert Camus) -
What do you connect your screen to? The motherboard or the graphics card?
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Misnaming things adds to the misery of the world (Albert Camus) -
How do you do it since the Gigabyte GeForce GTX 1050 Ti doesn't have a VGA output?
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Misnaming things adds to the misfortune of the world (Albert Camus) -
"Currently, my PC is connected to my TV via VGA cable as it was before, but I also tried with an HDMI cable and also on a AOC monitor connected via VGA."
Your graphics card doesn’t have a VGA input, so you can only make VGA connections on the motherboard. Connections on the motherboard’s video outputs (VGA or HDMI) will not work.
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Misnaming things is adding to the misery of the world (Albert Camus)-
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Hello,
I have been looking into my issue with my graphics card and I found out that my processor doesn't have the graphic "settings" and that a graphics card is required for it to work. My graphics card has DVI and HDMI ports. I can connect it to my TV, which serves as my screen, using an HDMI cable. However, I also found an adapter cable from DVI to VGA online if necessary. My main issue was that my PC turns on and off, then turns on again and shuts off once more. I think the fact that my screen doesn't detect my PC and that it turns off and on are two different problems. (I’m far from being a computer expert, and this is just my opinion). If you have ever dealt with this kind of problem or have any ideas, I would gladly take your advice; otherwise, I will take it to a specialist. I'm asking for your help because maybe I can solve the problem myself to avoid paying a specialist, but if necessary, I will pay.
Thank you in advance.- "I looked into my issue with my graphics card and found that my processor doesn’t have the graphic 'settings' and that a graphics card is automatically required for it to work"
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You need to read the responses from the people who write. If you don’t understand, ask for clarification. I wrote to you in the 28, in the following intervention:
"your CPU, the i5-9400F does not have an IGP (integrated graphics processor). The video outputs from the motherboard are therefore not connected to a graphics processor. That’s why they cannot function". You said you understood.
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On my graphics card, I have DVI and HDMI inputs. I can connect an HDMI cable to my TV, which serves as my screen. But I also found an adapter cable from DVI to VGA on a site if that becomes necessary.".
If it doesn’t work with HDMI, why do you think it will work with a DVI/VGA adapter? Moreover, it’s necessary to know which adapter to choose (passive or active).
"I think that the fact that my screen does not detect my PC and that it shuts down and restarts are two different issues".
Indeed. But it wasn’t clear that you had two problems. It may be a case of poor assembly. What power supply (brand and model) do you have? Is the CPU P8 power cable properly connected to the motherboard?
We can think that the issue of no display is just a consequence of this problem.
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The power supply is a Kolink Core 80 Plus KL-C400-400W
And the power cable is properly connected to my motherboard.-
Hi,
I don’t know if we can read it: https://kolink.eu/____impro/1/onewebmedia/PSU/Core%20Series/Kolink%20Core%20PSU%20-%20400W%20-%2080%20Plus/NEKL_014_2g.jpg?etag=%26%2334%3B26381-5cd5c72d%26%2334%3B&sourceContentType=image%2Fjpeg&quality=85
The model page: https://kolink.eu/Home/psu-1/core-series/kolink-core-psu---400w---80-plus.html
But the 12V rail has a power of 276W. A decent or even very good PSU has around 98% of its rated power on the 12V rail. Moreover, there's a line I’ve never seen on other PSUs: 300W continuous power. For a 400W PSU, that doesn’t look good.
Borrow a decent 400W PSU from someone. I think you won’t have any more issues. But, you need to test it.
This PSU is guaranteed for 2 years. Seasonic offers 5-year guarantees, which are more expensive, but much more stable. There are other good brands: CM, Corsair, BQ, etc.
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Now the computer turns on and off several times, but after a while it stays on. The problem is that nothing is still displayed on the screen, even though I have, this time, properly connected the HDMI cable to the GPU. When I start the computer, the GPU fans start spinning and stop suddenly before the PC shuts down by itself. Apparently, this is supposed to be normal since the fans are meant to start spinning when a certain temperature is reached, but I wanted to clarify. There is also a red light that remains on the motherboard, but I think that's normal.
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So my problem would come from the power supply?
Okay, because I haven't changed my power supply, but maybe it's not compatible with my new motherboard, which would explain quite a few things, and at that point, I would try a new power supply...
But I want to be sure that this will solve the problem, so are you sure that the issue comes from there? I would like to know your opinion: is it worth it to take the PC to a specialist or do you think I can fix the problem myself? (Knowing that I am far from being an expert and that I have already made several mistakes...)-
So, when did I lose track of which Intel architecture came out? I think it's starting from the Intel Core gen4. They have such low energy consumption during idle that some power supplies would turn off because they thought the computer was off. However, even though Kolink is a lousy brand, all power supplies made after 2015 know how to handle this very low energy consumption.
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