[SOLVED] PC has power, but will not turn on.

[Elkattio]

I am losing my ever-loving mind over this build! Before I went to bed last night everything was fine when I shut the system down. Everything has been working fine for two days. I wake up this morning, and nothing happens when I press the power button.

All of the annoying lights from the motherboard and GPU are on inside the case, but I still get nothing when pressing the power button. I checked the connections from the case to the motherboard, and they seem to be fine. What could be the problem?

AMD Ryzen 7 2700 3.2 GHz 8-Core Processor
Asus ROG STRIX B450-F GAMING ATX AM4 Motherboard
Corsair Vengeance LPX 32 GB (2 x 16 GB) DDR4-3000 Memory x2
Western Digital Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive x2
Asus Radeon RX 5700 8 GB STRIX Gaming OC Video Card
Cougar MX330 ATX Mid Tower Case
Corsair RM (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply

 

[kango692]

To rule out a faulty power button you can connect the reset button to the power switch header on the motherboard .
Or just short the power switch pins on the motherboard with a screwdriver ..

 

[Elkattio]

Or just short the power switch pins on the motherboard with a screwdriver ..

How exactly do you do that?

 

[kango692]

Look at page 20 of your manual
The panel connector takes most of the connections from your case.
Disconnect the "PWRSW" pins and then you can short the 2 pins with a screwdriver.
Or you can disconnect the "PWRSW" pins and then move the reset connectors over to it so now the "reset button" becomes the "power button"

 

[Elkattio]

I've switched the PWRSW over to the reset connectors, but still nothing. I'm not comfortable attempting to short the power pins. I know my luck. I'd probably short something else and then void the warranty.

 

[Elkattio]

Okay, I manned up and tried the shorting option. Nothing happened.

 

[NightHawkRMX]

This may take some time, but it can help to find the problem.

Take everything apart and put it together outside of the case excluding anything not needed.

 

[drivinfast247]

Are the GPU fans spinning?

 

[Elkattio]

Are the GPU fans spinning?

Nothing is spinning. The only evidence of power is indicated by the led indicators on the GPU and the glowing ASUS ROG Strix logo.

 

[Elkattio]

I tried some little doo-hickey from Amazon to test the PSU. The fan on the PSU started right up as soon as I flipped the switch. Sounds like it could be the motherboard or power button on the case.

https://www.amazon.com/gp/product/B01N8Q0TOE/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

 

[throwawayaccnt]

Nothing is spinning. The only evidence of power is indicated by the led indicators on the GPU and the glowing ASUS ROG Strix logo.

I just had a similar issue with an ROG Strix board, try making sure the USB3.0connector next to the 12pin connector is fully seated on the board

https://forums.tomshardware.com/thr...nto-cpu-socket-no-boot.3537675/#post-21373913

 

[throwawayaccnt]

This guy was the cause of my no boot issues despite power going to the board, make sure it's plugged in all the way even if you think it is

 

[Elkattio]

I ensured that the USB 3.0 connector was in good, but it still wouldn't start. I took the motherboard out and attempted to jump start it, but nothing happened.

 

[NightHawkRMX]

A USB connector is not needed to boot, that wouldn't be the culprit.

Have you done this?

This may take some time, but it can help to find the problem.

Take everything apart and put it together outside of the case excluding anything not needed.

 

[Elkattio]

A USB connector is not needed to boot, that wouldn't be the culprit.

Have you done this?

That is what I just did. The only thing connected is the PSU, GPU, and CPU, and the RAM, of course. Just as before, the LED indicators on the GPU light up, as well as the ROG Strix logo on the motherboard.

 

[NightHawkRMX]

Reseat CPU and check for bent pins. Reseat ram and GPU aswell.

Make sure the PCIe power connectors are connected to the GPU.

 

[Elkattio]

It's the hippy flipping PSU! I just tried an older/weaker PSU from my old system that recently crashed. Should've done that from the beginning.

 

[NightHawkRMX]

Ya know, I have seen a lot of RMs doing odd things recently on here. Like they work on some mobos but not others.

 

[throwawayaccnt]

A USB connector is not needed to boot, that wouldn't be the culprit.

Have you done this?

I gave him the suggestion because that was the literal cause and resolution to the exact same issue I had less than a week ago with the exact same board. It merits checking to be sure EVERYTHING is appropriately connected.

That is what I just did. The only thing connected is the PSU, GPU, and CPU, and the RAM, of course. Just as before, the LED indicators on the GPU light up, as well as the ROG Strix logo on the motherboard.

Trying to think of what else you could eliminate as a source of error. Have you tried using a different powerstrip/outlet? Do you have access to another working PSU that you could use?

Out of curiosity how old is this computer? The first B450-F board I had received when I purchased a bundle deal off NewEgg arrived D.O.A., the components would light up but it gave a peristent DRAM light error that I eventually RMA'd. Do you notice any of the troubleshooting lights on the board indicated in your manual lighting up?

 

[NightHawkRMX]

I gave him the suggestion because that was the literal cause and resolution to the exact same issue I had less than a week ago with the exact same board. It merits checking to be sure EVERYTHING is appropriately connected.

You must have bumped something else in place in the process. You can boot systems without a case, so USB connectors a definately not needed.

 

[Elkattio]

Ya know, I have seen a lot of RMs doing odd things recently on here. Like they work on some mobos but not others.

What do you mean by RM?

 

[NightHawkRMX]

Corsair RM and RMx power supplies.

Makes no sense IK, but i have seen this same scenario recently where the RMx didn't work but the older PSU did.

 

[Elkattio]

I just looked at the box and realized that. If not this PSU, what would you recommed? This seemed to be the best that the Lexington Best Buy had to offer.

 

[NightHawkRMX]

The PSU could be DOA.

Can you try the RM750w in another PSU to test if the PSU is dead?

 

[Elkattio]

The PSU could be DOA.

Can you try the RM750w in another PSU to test if the PSU is dead?

I don't have that option. The only other PC I have is dead as a doornail.