cancel
Showing results for 
Search instead for 
Did you mean: 

Computer shuts down after a few seconds

SergioGarG
Level 7

Hi everyone,

Noob here, so beware. After some years, I finally decided to build a PC from some new parts and some inherited from my brother (see the list below).

I assembled everything, but after I powered up the computer, I realized the motherboard lighted a few LEDs orange. What is worse, after turning on the PC, it shuts down after a few seconds (https://www.youtube.com/watch?v=GUZP-Gfs_U0).

I then went down the rabbit hole and started removing components from the configuration to isolate the issue. At some point, I had only the PSU, motherboard, and CPU connected but the problem remained.

I also read that the problem could be the case so I removed the motherboard from it and placed it on top of a surface that wouldn't cause static electricity (https://imgur.com/tzwUDdC). That didn't solve it.

I then started trying to replace components. I requested a new motherboard expecting it to be the main problem. That wasn't it. Thinking that the problem could be the PSU - the power supply might not be enough, I suspected - I bought a new one. But no, it wasn't the problem either. At this point, I'm a bit desperate so I'm begging for help.

I then started trying to replace components. I requested a new motherboard expecting it to be the main problem. That wasn't it. Thinking that the problem could be the PSU - the power supply might not be enough, I suspected - I bought a new one. But no, it wasn't the problem either.

Another potentially interesting thing to highlight is that everything shuts down if I leave the power button jumper on the "10-1 pin Sustem Panel header". If I use the jumper and immediately remove it when the system boots the fans keep spinning - although the orange LED remains and the video outputs don't work.

I have also checked that the motherboard is compatible with the CPU, and it is supposed to be.

At this point I'm a bit desperate so I'm begging for help. Thanks in advance!

--List of components:

- Motherboard: Prime asus b450m-a II [new]
- SSD: crucial P3 PCIe NVMe M.2 SSD [new]
- RAM: x2 DDR4 vengeance LPX sticks [inherited]
- CPU: AMD Ryzen 5 2600 [inherited]- GPU: sapphire radeon rx580 [inherited]
- PSU: Enermax naxn (500 W) [inherited] -> Seasonic G12 GC-850 (850 W) [new]

PS: I've other posts (e.g., https://www.reddit.com/r/buildapc/comments/ahp51r/comment/eegonu3/) but didn't solve my problem.

74 Views
1 REPLY 1

Jiaszzz_ROG
Customer Service Agent

Hello @SergioGarG 

Due to the ongoing local holidays in our area, my response time may experience delays.
I apologize for any inconvenience the delayed replies may have caused.

As we have observed repetitive posting, we recommend using this thread as the primary avenue for communication:
Problem with built PC
If you have any updates or discussions related to this matter, please update that thread to avoid confusion or information gaps.

Thank you.