My PC wouldn't turn on when I press power button

[Polizei004]

When I pressed the power button the pc wouldn't turn on no fans no led the USB devices seem to have power. This has happened before but it fixed itself. Now it's happening again the PC is 2 years old with a Ryzen 5 3500 and Radeon RX 590 the mbd is Gigabyte B450M Aorus Elite and the psu is Cooler Master 650W. I wanna what part causing this problem my PC has other problems too like I cannot run my graphics card at stock speed I had to undervolt and undervlock it to run games. The motherboard has died before but it that time it would turn on but wouldn't have display output I used warranty to fix it. Idk if I should buy a new Motherboard or a new power supply and the case of GPU not being able to run at full speed is it the GPu or PSU or Mbds fault?

[191x7]

Can you try a different GPU?

[Indian pc builder]

from the looks of it, if it does turn on but you have to reduce the power limits, i would highly recommend upgrading your power supply to 750 or 850 watts, as an r590, afaik is a rather power hungry card

[TukangUsapEmenq]

2 minutes ago, Polizei004 said:

I wanna what part causing this problem my PC has other problems too like I cannot run my graphics card at stock speed I had to undervolt and undervlock it to run games

From this part, I guess the power supply juice didn't get enough juice? My assumption, the PSU getting killed slowly because you actually used it close-to it's maximum power, like, constantly, and power supplies don't like to be forced to run on it's max rated power for long. Did you ever monitor how much wattage you use?

 

As @Indian pc builder said, you might have to change your PSU.

 

5 minutes ago, Polizei004 said:

the case of GPU not being able to run at full speed

Really depends. I see you're using already-enough CPU+chipset+mobo to accomodate that GPU (except if you accidentaly using PCI-e 2.0 speed on UEFI or so), so perhaps it's more on PSU constraints.

 

But aside all of above, try to:

1. Use a different mobo and PSU. If it works, you got the problem. But if it's still having a problem... Go to 2.
2. Use a different GPU.

[Indian pc builder]

1 minute ago, TukangUsapEmenq said:

From this part, I guess the power supply juice didn't get enough juice? My assumption, the PSU getting killed slowly because you actually used it close-to it's maximum power, like, constantly, and power supplies don't like to be forced to run on it's max rated power for long. Did you ever monitor how much wattage you use?

 

As @Indian pc builder said, you might have to change your PSU.

 

Really depends. I see you're using already-enough CPU+chipset+mobo to accomodate that GPU (except if you accidentaly using PCI-e 2.0 speed on UEFI or so), so perhaps it's more on PSU constraints.

 

But aside all of above, try to:

1. Use a different mobo and PSU. If it works, you got the problem. But if it's still having a problem... Go to 2.
2. Use a different GPU.

not bad ideas, but we don't know if he has that option yet, so i would say the safest option is a new psu as your gonna need that anyway, and just try with the current setup, if it works great, otherwise i would recommend you go to these steps, posted by @TukangUsapEmenq see the psu seems to be the component that has most likely died here, and the gpu and the motherboard are next on the list as they are both equally likely to die

[--SID--]

35 minutes ago, Polizei004 said:

When I pressed the power button the pc wouldn't turn on no fans no led the USB devices seem to have power. This has happened before but it fixed itself. Now it's happening again the PC is 2 years old with a Ryzen 5 3500 and Radeon RX 590 the mbd is Gigabyte B450M Aorus Elite and the psu is Cooler Master 650W. I wanna what part causing this problem my PC has other problems too like I cannot run my graphics card at stock speed I had to undervolt and undervlock it to run games. The motherboard has died before but it that time it would turn on but wouldn't have display output I used warranty to fix it. Idk if I should buy a new Motherboard or a new power supply and the case of GPU not being able to run at full speed is it the GPu or PSU or Mbds fault?

Does it power up when you jumpstart the motherboard?

 

What's the exact model of the Cooler Master PSU?

[SimplyChunk]

if you're having to underclock/undervolt the gpu to get games to work it's not the fault of the motherboard

[Sjaakie]

If the pc really doesnt do anything on pressing the power button I cant imagine the gpu is causing this. You can rule it out even by removing the gpu. You wont have video output but the pc should at least turn on.

 

Indeed jumpstart the motherboard as @--SID--says to rule out the button itself.

 

Also check if the psu turns on with a psu tester or paperclip (google it, just be sure to double check the pins!)

 

If the psu turns on with the paperclip but it doesnt when connected to the motherboard then I guess the motherboard would be the cause.