Problem with the motherboard power supply - 4pin to 8pin power supply.

Hello, I have a problem with the computer, I will start with its components:
Motherboard: Asus H87M-E
Processor: Intel Pentium G3258
Power supply: White Energy 400W
Ram: any one 4GB chip

The problem itself is that when I connect a power supply that is functional to the motherboard, there is no reaction. The fans are not spinning, there is only a green LED on the motherboard. The board has an 8pin atx input, and I connected 4pin, could this be a problem or something else? I will only add that when I connected the power supply to the older 4pin board it worked.

Quote:

DO NOT forget to connect the 4-pin / 8-pin ATX + 12V power plug. Otherwise, the system will not boot up.

This is what the manual says, so theoretically the board should work with a 4pin plug connected. Unfortunately, the power supply you have is not the highest quality, so I would suggest checking the motherboard with a branded power supply. Or at least check the voltage of your power supply with a tester.

Plmkohehe wrote:

the board has an 8pin atx input and I plugged 4pin or this may be a problem

That's probably not the problem.

Plmkohehe wrote:

400w white energy power supply

Read about the "black list of power supplies"
Measure the voltages of the power supply upsc-d s30122-k5660-m300-e1

So there is no need to play with 4pin to 8 adapters, just buy a good power supply.

Yes, buying a new power supply is a smart decision.
Create a topic in the What to buy section, enter the amount, then something will be advised.
By the way, only if you intend to use an integrated graphics card or buy a card, it should also be mentioned.

Plmkohehe wrote:

So there is nothing to play with 4pin to 8 adapters, but buy a good power supply

At least, check the one you have (measurements). The problem could also be outside of the power supply, although he is the prime suspect.

Siena today I checked this pltte by connecting to another friend's power supply (also 4pin) And it looked the same or is it a board to be replaced?

And will there be a 4pin to 8 adapter or it must be a power supply?

I bought this adapter because the store is close and now everything works normally, i.e. the fans are working, etc., but there is a new problem. When turned on, the computer starts up but nothing is displayed on the screen. I tried with the graphics card and connected to the motherboard and the same thing all the time.

Plmkohehe wrote:

everything works fine

Plmkohehe wrote:

but nothing is displayed on the screen

The album does not start and that's it. Change this scrap for a power supply.

Since it was tested on two power supplies (and we will assume that the author found a functional power supply for the test), then buying a third one is a solution for the future - it will be useful after replacing the board, because everything indicates that it is damaged. Unless the author connected a quality power supply similar to the first one ...

This CD has a colleague from the news, did he get it as "should work"? It is worth trying to do a BIOS reset (jumper on the board). Memory installed correctly, functional? You can try to move the memory to the adjacent slot. Is there a buzzer connected to the hob? If not, then it's worth plugging it in. Does the buzzer beep when I remove the RAM and start the computer (without any memory)?