Power button won't start the system (shuts it down ok tho)

[Absentidei]

I'm having a weird problem with my computer. 

The power button doesn't power on the computer. 
When the computer is on, and I hold the power button for ten seconds, it shuts it down ok, so the button and connector obviously works.

To power the computer on, I have to flick the power switch on the power suply back and forth a couple of times, and then it fires it. 

 

Any suggestions as to how I should go about troubleshooting this?

The system is

os: Windows 10 64 bit.

MB: MSI X470 gaming pro carbon (MS-7B78)  (bios version 2.eo)

CPU: Ryzen 7 2700x

RAM: Ballistix Tracer 16GB DDR4
GPU: ASUS geforce gtx 1660

PSU: Corsair AX 850

 

 

[Hyrogenes]

Make sure that the button is on the correct header

[Absentidei]

5 minutes ago, Hyrogenes said:

Make sure that the button is on the correct header

It is. 


When I configure windows to put the computer to sleep when the power button is pressed, it does, and it wakes it up again.

It also powers down the system when pressed and held down for ten seconds.

 

It just won't start the computer from power off. 

 

[Hyrogenes]

10 minutes ago, Absentidei said:

It is. 


When I configure windows to put the computer to sleep when the power button is pressed, it does, and it wakes it up again.

It also powers down the system when pressed and held down for ten seconds.

 

It just won't start the computer from power off. 

 

How are you turning it on now? Are you manually shorting the pins?

[GuiltySpark_]

2 minutes ago, Hyrogenes said:

How are you turning it on now? Are you manually shorting the pins?

Not to be rude, but he explained all that in the original post, along with your last suggestion. 

[Hyrogenes]

1 minute ago, rickeo said:

Not to be rude, but he explained all that in the original post, along with your last suggestion. 

Oh gosh Im stupid. Sorry

[Absentidei]

5 minutes ago, Hyrogenes said:

How are you turning it on now? Are you manually shorting the pins?

I am turning the switch on the power supply off and on a couple of times untill it starts up...

It says so in the original post.

[Mark Kaine]

if the front connectors are really connected properly it's probably the psu then... since you have to switch that on and off for it to work... 

 

Do you still press the power button then, or does the pc boot just from flipping the psu switch? 

 

 

1 minute ago, Absentidei said:

I am turning the switch on the power supply off and on a couple of times untill it starts up...

It says so in the original post.

yes sure but you aren't saying if the power button works then, which would be the important part.

 

so if the power button *never* works to turn the pc on, it's most likely psu issue. 

 

Also full specs, please? 

 

 

[Absentidei]

It turns itself on. I don't have to press the power button.

I'm sorry if that was unclear.
 

 

I got the PSU second hand from a mates old computer, so that could very well be the case... 

I'll try with a different psu once I can get hold of one.

And just not power of the system untill then.

 

Computer:      MSI MS-7B78
CPU:           AMD Ryzen 7 2700X (Pinnacle Ridge, PiR-B2)
               3700 MHz (37.00x100.0) @ 4273 MHz (42.75x100.0)
Motherboard:   MSI X470 GAMING PRO CARBON (MS-7B78)
BIOS:          2.E0, 06/10/2020
Chipset:       AMD X470 (Low-Power Promontory PROM28.A)
Memory:        16384 MBytes @ 1466 MHz, 16-18-18-38
               - 8192 MB PC19200 DDR4 SDRAM - Crucial Technology BLT8G4D30BET4K.C8FD
               - 8192 MB PC19200 DDR4 SDRAM - Crucial Technology BLT8G4D30BET4ƒ.C8FD
Graphics:      ASUS PHOENIX GTX 1660 O6G
               NVIDIA GeForce GTX 1660, 6144 MB GDDR5 SDRAM
Drive:         Samsung SSD 870 QVO 1TB, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:         KINGSTON SA400S37480G, 468.9 GB, Serial ATA 6Gb/s @ 6Gb/s
Sound:         NVIDIA TU116 - High Definition Audio Controller
Sound:         AMD Zen - HD Audio Controller
Network:       Intel I211AT Copper (Pearsonville) Network Adapter
Network:       Broadcom BCM4352 802.11ac Wireless Network Adapter
OS:            Microsoft Windows 10 Professional N (x64) Build 19042.844 (20H2)
 

 

[Absentidei]

It's a bit weird though, because it didn't act like this when I first put it together.
I think it might have started once I changed the CPU cooler from the stock cooler to a cooler master hyper 212.
Thought it might have started once I put it over in this case with PSU as well...
could I have damaged something on the MB? 
 

[Hyrogenes]

22 minutes ago, Absentidei said:

It's a bit weird though, because it didn't act like this when I first put it together.
I think it might have started once I changed the CPU cooler from the stock cooler to a cooler master hyper 212.
Thought it might have started once I put it over in this case with PSU as well...
could I have damaged something on the MB? 
 

Likely not mobo damage if youre having power issues. It will most likely by a faulty PSU not a not fit for your pc PSU cause you have way more power than your tdp demands.

[Absentidei]

Just now, Hyrogenes said:

Likely not mobo damage if youre having power issues. It will most likely by a faulty PSU not a not fit for your pc PSU cause you have way more power than your tdp demands.

Ok. Thanks.
I'll start looking for a new PSU then.

Found a cheap-ish seasonic fanless 460w on the norwegian craigslist equivalent.
Should be sufficient, right?
https://outervision.com/b/YIePt1