[SOLVED] New build shuts down when gaming and after stress testing ?

[baylan0]

Specs:
Mobo: Gigabyte A620M DS3H
CPU: Ryzen 5 7600X
GPU: XFX 7900 XTX
RAM: 2 x 16GB Vengeance 6000 MHz (EXPO ON/OFF still turns off)
CPU Cooler: DeepCool AK620
PSU: Seasonic B12 850W 80 Plus Bronze

PC shuts down almost instantly after starting stress test from AIDA64 and FurMark. Could this be a defective PSU? It also happens when gaming… It just shuts down, no blue screen. Temps are fine, so it’s not overheating or anything like this. Please help thank you!

EDIT: I only had two cables to connect to the three 8-pins from the GPU, so i daisy chained one, hope thats not an issue.

 

[COLGeek]

How old is your PSU? It is the likely source of the problem. That PSU uses an older design and doesn't meet the needs of high-end modern GPUs like your 7900 XTX. These GPUs are very demanding in terms of power requirements.

 

[baylan0]

How old is your PSU? It is the likely source of the problem. That PSU uses an older design and doesn't meet the needs of high-end modern GPUs like your 7900 XTX. These GPUs are very demanding in terms of power requirements.

The PSU is around 3 months old, sat on a shelf until yesterday.

 

[COLGeek]

The PSU is around 3 months old, sat on a shelf until yesterday.

Understood. As stated earlier, the PSU is the likely issue regardless of its age.

A couple to consider:

(1000w): https://seasonic.com/atx3-focus-gx

DARK POWER 13 | 1000W silent high-end Power supplies from be quiet!

No compromise silence and performance

www.bequiet.com

https://www.corsair.com/us/en/p/psu...-fully-modular-atx-power-supply-cp-9020253-na

 

[baylan0]

Understood. As stated earlier, the PSU is the likely issue regardless of its age.

A couple to consider:

(1000w): https://seasonic.com/atx3-focus-gx

DARK POWER 13 | 1000W silent high-end Power supplies from be quiet!

No compromise silence and performance

www.bequiet.com

https://www.corsair.com/us/en/p/psu...-fully-modular-atx-power-supply-cp-9020253-na

I just checked and the power button seems to stay on after the PC shuts down. Does this confirm the PSU theory? Thank you for the recommendations!

 

[COLGeek]

I just checked and the power button seems to stay on after the PC shuts down. Does this confirm the PSU theory? Thank you for the recommendations!

Do you mean like a LED that stays illuminated?

 

[baylan0]

Do you mean like a LED that stays illuminated?

Yes, the LED stays illuminated.

 

[COLGeek]

Try this to see what happens. Reach behind your system and flip the PSU power switch to off. Then press the power button to discharge residual power in the system (I know this sounds silly, but I'm serious). Next, flip that switch back on. Does the power switch LED illuminate?

 

[baylan0]

Try this to see what happens. Reach behind your system and flip the PSU power switch to off. Then press the power button to discharge residual power in the system (I know this sounds silly, but I'm serious). Next, flip that switch back on. Does the power switch LED illuminate?

No, the LED stays off that way.

 

[COLGeek]

No, the LED stays off that way.

Now, power the system on/off and see if it stays on.

 

[baylan0]

Now, power the system on/off and see if it stays on.

The system stays on as long as I don’t do anything demanding.

 

[COLGeek]

The system stays on as long as I don’t do anything demanding.

That would suggest the PSU needs to be replaced.

 

[baylan0]

That would suggest the PSU needs to be replaced.

Do you think I should try to RMA it first, could it be a defective unit ? Or should I just buy a new one ?

 

[COLGeek]

Do you think I should try to RMA it first, could it be a defective unit ? Or should I just buy a new one ?

I would not replace with that same model. I suggested three more suitable models above.

 

[baylan0]

I

I would not replace with that same model. I suggested three more suitable models above.

Thank you. What do you think about the GIGABYTE UD1000GM 80 Plus Gold ? I found it at a fair price where I live.

 

[COLGeek]

I

Thank you. What do you think about the GIGABYTE UD1000GM 80 Plus Gold ? I found it at a fair price where I live.

Should be okay and meet your needs.

 

[baylan0]

Should be okay and meet your needs.

Thank you for your help!

 

[COLGeek]

My pleasure. Let us know how the swap goes.

 

[baylan0]

My pleasure. Let us know how the swap goes.

Just as a follow up, turns out the PSU was defective, so the place I bought it from replaced it. The new one had 3 separate PCIE cables, so maybe that helped too! But now the system is stable!!

 

[NorbertPlays]

The new one had 3 separate PCIE cables, so maybe that helped too!

I'd say that was possibly the only problem; the GPU needs 355W, you get 75W from the slot leaving 280W, so the card was likely trying to draw about 90-100W through each power input meaning one of the PCIe outputs on your PSU was trying to supply ~200W causing the overload protection to kick in.

 

[baylan0]

I'd say that was possibly the only problem; the GPU needs 355W, you get 75W from the slot leaving 280W, so the card was likely trying to draw about 90-100W through each power input meaning one of the PCIe outputs on your PSU was trying to supply ~200W causing the overload protection to kick in.

That would make sense. Thank you for the clarification.