PC won't start up

[Mathantastic]

I just changed my faulty (I thought it was faulty, not sure now) PSU to a new one, and put a brand new stick of ram to my old pc, to see if I could get it to boot, but the same problem keeps happening, wich is that nothing happens at all lol, the fans don't spin, no lights light up, nothing, I am thinking that maybe the problem is on motherboard or CPU, is there a way to test wich one it is without having to use other parts? I don't want to touch my brand new pc out of fear of fucking it up lol

 

If it was CPU the fans would spin for  a lil while right?

specs:
ryzen 5 1400
1x8gb 2666mhz RAM
an old empty 360gb HD I found lol (I had a windows boot pendrive in it when booting)
rx 570

Dell motherboard

[Darkwing Drex]

Not really. You'll have to have another board to test anything further. If a new PSU isn't fixing it, switching out the board might be the only route left. You can try another stick of ram, but even bad ram would give you an error light or boot loop, not an inability to power on.

[Mathantastic]

3 minutes ago, Darkwing Drex said:

Not really. You'll have to have another board to test anything further. If a new PSU isn't fixing it, switching out the board might be the only route left. You can try another stick of ram, but even bad ram would give you an error light or boot loop, not an inability to power on.

would a faulty CPU also cause that problem? or is it guarateed motherboard?

[Darkwing Drex]

You would at the very least get power on the board if it's anything but the PSU or the board. If your problem is the cpu, ram, or gpu, you'll still get power on your board along with an error light, beep, or boot loop. It's unlikely, but you can disconnect your gpu and try to power it on. Without on board graphics you can't do much, but if it powers on, at least you've found the problem (GPU). But my money is on motherboard or PSU.

[Mathantastic]

2 minutes ago, Darkwing Drex said:

You would at the very least get power on the board if it's anything but the PSU or the board. If your problem is the cpu, ram, or gpu, you'll still get power on your board along with an error light, beep, or boot loop. It's unlikely, but you can disconnect your gpu and try to power it on. Without on board graphics you can't do much, but if it powers on, at least you've found the problem (GPU). But my money is on motherboard or PSU.

the PSU is brand new, and the old PSU that I thought was faulty was doing the same thing, so I guess PSU is not likely to be the problem
one thing that I think I should have mentioned, on the old PSU, the one I thought was faulty, it had a button, a weird round button, that I had no clue what it did, but whenever I clicked that, the fans would spin for a secound and then turn off

[Darkwing Drex]

That could have been a silent mode or eco button. Regardless, if you press it or not, when it's under load, the fan will spin up. If it wasn't faulty and you swapped it, at least you can be sure it wasn't the PSU.

[Mathantastic]

17 minutes ago, Darkwing Drex said:

That could have been a silent mode or eco button. Regardless, if you press it or not, when it's under load, the fan will spin up. If it wasn't faulty and you swapped it, at least you can be sure it wasn't the PSU.

but the fans span, for a while, not when pressing the power button, but by pressing the circular button on the PSU, doesn't that mean that the motherboard is getting power? since all the fans are plugged there, and still, when pressing the normal power button nothing happens
I tried shorting the pins of the power button, cause maybe it was a problem with the power button, but the motherboard has no lables for wich are the power and reset pins

[Darkwing Drex]

Now I'm not sure. Your board will have 2 power connections. One is the 24 pin and the other is 8 pin CPU connection. It's hard to say where the issue is honestly. You're probably better off getting a new board TBH. If it's getting power through the board to the fans, it's probably not the PSU. If the problem was the old PSU, then it may have taken the board along with it, sadly.

[HelloPeople]

6 hours ago, Mathantastic said:

but the fans span, for a while, not when pressing the power button, but by pressing the circular button on the PSU, doesn't that mean that the motherboard is getting power? since all the fans are plugged there, and still, when pressing the normal power button nothing happens
I tried shorting the pins of the power button, cause maybe it was a problem with the power button, but the motherboard has no lables for wich are the power and reset pins

by fan spinning you mean the case fans?

[Mathantastic]

8 hours ago, HelloPeople said:

by fan spinning you mean the case fans?

case and CPU fan

[Mathantastic]

10 hours ago, Darkwing Drex said:

Now I'm not sure. Your board will have 2 power connections. One is the 24 pin and the other is 8 pin CPU connection. It's hard to say where the issue is honestly. You're probably better off getting a new board TBH. If it's getting power through the board to the fans, it's probably not the PSU. If the problem was the old PSU, then it may have taken the board along with it, sadly.

I see, thank you

[Alder Lake]

15 hours ago, Mathantastic said:

I just changed my faulty (I thought it was faulty, not sure now) PSU to a new one, and put a brand new stick of ram to my old pc, to see if I could get it to boot, but the same problem keeps happening, wich is that nothing happens at all lol, the fans don't spin, no lights light up, nothing, I am thinking that maybe the problem is on motherboard or CPU, is there a way to test wich one it is without having to use other parts? I don't want to touch my brand new pc out of fear of fucking it up lol

 

If it was CPU the fans would spin for  a lil while right?

specs:
ryzen 5 1400
1x8gb 2666mhz RAM
an old empty 360gb HD I found lol (I had a windows boot pendrive in it when booting)
rx 570

Dell motherboard

if the CPU or MOBO was broken the fans shouldn't spin, as if the CPU's broken, it won't get hot enough for the motherboard to "justify" turning on the fans, and if the MOBO is broken, it won't be able to turn on the fans

[Mathantastic]

1 hour ago, Alder Lake said:

if the CPU or MOBO was broken the fans shouldn't spin, as if the CPU's broken, it won't get hot enough for the motherboard to "justify" turning on the fans, and if the MOBO is broken, it won't be able to turn on the fans

but when I press the weird circular button in the power supply (the old one) the fans (including the CPU fan) would spin for a secound, and then stop
When I press the power button, nothing would happen, only the weird circular button in my old PSU, would that mean that its the CPU?

[Alder Lake]

1 minute ago, Mathantastic said:

but when I press the weird circular button in the power supply (the old one) the fans (including the CPU fan) would spin for a secound, and then stop
When I press the power button, nothing would happen, only the weird circular button in my old PSU, would that mean that its the CPU?

my guess would be that that is an indication of a board issue, but I'm not certain

[Mathantastic]

10 minutes ago, Alder Lake said:

my guess would be that that is an indication of a board issue, but I'm not certain

if I try the same system, same CPU, on another motherboard, is there a chance I'll fuck up the other motherboard, in case the problem is on the CPU?

[Alder Lake]

On 12/10/2021 at 10:53 AM, Mathantastic said:

if I try the same system, same CPU, on another motherboard, is there a chance I'll fuck up the other motherboard, in case the problem is on the CPU?

try it on a different motherboard, if the other one doesn't work, then it's the CPU, if it does work, it's the board