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PC starts for a second but won't boot.

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Benson

Benson

PCHF Member
Dec 15, 2022
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#1
Hi all,

So the issue is as the title says. I've seen a thousand posts throughout the Web of similar issues and I have narrowed it down to two likely issues through some testing.

This started after playing Darktide where the computer shut down. It started up a couple of times but any attempt to do anything forced it to shutdown again.

I couldn't see any clear temp issues at the time (CPU was around 50c, GPU 60c) but it did feel like an overheat.

Now it won't start at all (quick flash of light then nothing).

I have ruled out the PSU through the paper clip test.

RAM is also ruled out as there is no post at all.

GPU is also not the issue as unplugging makes no difference.

Removing CPU power makes no difference.

Removing the CPU gets no response at all from the power button.

I have also tried seperate wall plug and Removing all USB devices.

If it helps, when plugged in the motherboard ambient lighting still lights.

Specs: AS Rock X570 Steel Legend
RYZEN 9 5900X
Corsair Dominator 3600mhz
MSI Ventus X3 3060Ti

So I'm hoping the motherboard has crapped the bed as it's the cheapest replacment by far but any other suggestions or tests I could conduct?
 
#3
Lets start here.

Make and model of the PSU?

Benson said:
I have ruled out the PSU through the paper clip test.
Click to expand...
Wish that they would STOP suggesting that useless test.

Bad PSUs can pass the paperclip test. The true test that eliminates a PSU from the equation is a replacement or trying that same PSU in another known working machine. Only these 2 can truly rule out a PSU.

Paperclip tests are flawed since you're advised to induce a load on one end of the PSU to get it to start, that test does not tell you how many watts the PSU can effectively output if connected to a full build.

Have you tried a different display card?

Does the motherboard have an attached BIOS speaker?
Is there any pattern and amount?

Can you run the system at all long enough to get a speccy report?

So other can assist let get a speccy report.

What is the brand and model name or number of the PSU.

Download then run Speccy (free) and post the resultant url for us, details here, this will provide us with information about your computer hardware + any software that you have installed that may explain the present issue/s.

To publish a Speccy profile to the Web:

In Speccy, click File, and then click Publish Snapshot.

In the Publish Snapshot dialog box, click Yes to enable Speccy to proceed.

Speccy publishes the profile and displays a second Publish Snapshot. You can open the URL in your default browser, copy it to the clipboard, or close the dialog box.
 
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