Question Computer suddenly died ?

[Cantholdanylonger]

This morning i turn on my pc and its work fine no error at all for the past 7 month, after that i turn it off to go to college. And now after coming back home, when i turn on my PC it doesn't turn on at all, no light, no fan spin, no PSU click.

I test the PSU with paper clip and the fan spins, and I hear the click. But when i plug it to the motherboard it doesn't turn on at all. I also removed RAM and try the sticks one by one, reseat gpu & cpu but still the same problem.

Spec
Mobo: ASRock b550m pro4
PSU: 1stplayer 600w bronze
CPU: Ryzen 5 5600
GPU: RX 6600
RAM: 32GB DDR4

All parts are brand new, i have multimeter but don't know how to use it. Pls help me identify whats the problem, thx.

*Sorry for bad english

 

[Ralston18]

Will the system boot into safe mode?

= = = =

Power down, unplug, open the case.

Clean out dust and debris.

Verify by sight and feel that all connectors, cards, RAM, jumpers, and case connections are fully and firmly in place. They can and do work themselves loose over time due to vibrations and heat related thermal expansion/contraction.

Use a bright flashlight to inspect everything and everywhere for signs of damage.

= = = =

To test PSU with a multimeter (do get help if you are not comfortable with doing the testing yourself):

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

Any voltages out of tolerance make the PSU suspect.

= = = =

Are you able to obtain another known working PSU to swap into the system?

 

[Cantholdanylonger]

Will the system boot into safe mode?

= = = =

Power down, unplug, open the case.

Clean out dust and debris.

Verify by sight and feel that all connectors, cards, RAM, jumpers, and case connections are fully and firmly in place. They can and do work themselves loose over time due to vibrations and heat related thermal expansion/contraction.

Use a bright flashlight to inspect everything and everywhere for signs of damage.

= = = =

To test PSU with a multimeter (do get help if you are not comfortable with doing the testing yourself):

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

Any voltages out of tolerance make the PSU suspect.

= = = =

Are you able to obtain another known working PSU to swap into the system?

The pc is totally dead, also Its a open bench case, so no dust.

I test with multimeter and the result is the same as a normal 12v 3.3v 5v

I don't have any other psu

 

[Ralston18]

This motherboard?

https://download.asrock.com/Manual/B550M Phantom Gaming 4.pdf

[Do verify that I found the applicable motherboard manual.]

Read/review the manual going step by step to double check everything.

Try a CMOS reset and then a new, fresh CMOS battery.

Check the power source and path serving the open bench setup: i.e., power outlet, surge protecters, etc...

Ensure that the power source is the correct voltage and stable.

 

[Cantholdanylonger]

Done, still same. My motherboard is ASRock b550m pro4, not ASRock b550m phantom gaming

 

[helper800]

Done, still same. My motherboard is ASRock b550m pro4, not ASRock b550m phantom gaming

At this point I would start assuming PSU, motherboard, and RAM in that order. What country's market do you have access to for parts? I want to recommend a PSU as a test, but I need a budget and website for that.

 

[Cantholdanylonger]

At this point I would start assuming PSU, motherboard, and RAM in that order. What country's market do you have access to for parts? I want to recommend a PSU as a test, but I need a budget and website for that.

I live in indonesia, and i buy all it on Shopee. Its like amazon

 

[Cantholdanylonger]

This motherboard?

https://download.asrock.com/Manual/B550M Phantom Gaming 4.pdf

[Do verify that I found the applicable motherboard manual.]

Read/review the manual going step by step to double check everything.

Try a CMOS reset and then a new, fresh CMOS battery.

Check the power source and path serving the open bench setup: i.e., power outlet, surge protecters, etc...

Ensure that the power source is the correct voltage and stable.

I test this

PSU shorted (green to black, 16 to GND) — fans spin

5V standby is present

No visible damage or burn marks

No shorts on 24-pin

Measured 12V and 5V lines — good

Tried CPU & RAM reseat — still no post

Forced PSU on while connected to mobo — fans spin, board lights on

Stuck on CPU/DRAM debug LEDs

vCore on CPU VRM (choke output) = 0V

Measured with multimeter directly on choke and related cap — no voltage

 

[CyberFlash]

Am guessing that it's the PSU since that particular model from 1stplayer isn't good. Their steampunk models are a lot better. A new model from below tier list could possibly solve your issue completely.

PSU Tier List rev. 17.0g - Cultists Network

PSU Tier List will help you to choose the best PSU out of hundreds of models on the market. From budget to the highest end Power Supplies.

cultists.network

 

[Ralston18]

Swap in a known working (no problems) PSU from a donor system.

Determine if the problems end.

 

[helper800]

I test this

PSU shorted (green to black, 16 to GND) — fans spin

5V standby is present

No visible damage or burn marks

No shorts on 24-pin

Measured 12V and 5V lines — good

Tried CPU & RAM reseat — still no post

Forced PSU on while connected to mobo — fans spin, board lights on

Stuck on CPU/DRAM debug LEDs

vCore on CPU VRM (choke output) = 0V

Measured with multimeter directly on choke and related cap — no voltage

It took me a long time digging through shopee, but this is a really nice A tier PSU. Is it within budget? You can use it for 10+ years for future builds.