Power on needs power and reset buttons pressing

Robdav

Robdav

Robdav

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Joined
18 Oct 2002
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Southern England
Hello.

Brought one of the OC's Tech Labs AM5 pre-built systems with the following spec last month.
  • 1x Phanteks XT Pro Ultra ATX Case Tempered Glass Window, Black
  • 1x AMD Ryzen 9 9950X3D Sixteen Core 5.70GHz (Socket AM5) Processor - Tray
  • 1x Asus ROG Strix B650E-F Gaming WIFI (Socket AM5) DDR5 ATX Motherboard
  • 1x *Build* Phanteks Glacier One 360 M25 Black RGB All In One CPU Water Cooler
  • 1x Corsair Vengeance EXPO 64GB (2X32GB) DDR5 PC5-41600C40 5200MHz Dual Channel Kit - Black (CMK64GX5M2B5200Z40)
  • 1x *Build* Asus GeForce RTX 5090 TUF Gaming OC 32GB GDDR7 PCI-Express Graphic
  • 1x CORSAIR RMe Series RM1000e Fully Modular ATX 3.1 Power Supply (CP-9020297-UK)
  • 1x Samsung 9100 Pro 1TB M.2 2280 PCIe 5.0 x4 NVMe Solid State Drive
  • 1x Build Stock Microsoft Windows 11 Home Advanced - Systems
I've since replaced the PSU with the 1200w version (1x CORSAIR RMe Series RM1200e Fully Modular ATX 3.1 Power Supply) as every time I did anything more demanding than run notepad the PSU would start popping!! (not sure why they would allow you to buy a 5090 / 9950x3d with a 1000w psu but anyway... )

So every time I start the PC I press the power button and the fans fire up at full speed, the LED's fire up and it hums along for a minute or so before the fans settle down and then it shuts down again. If, however, I press the reset button as soon as the fans stop spinning at full speed the PC boots and goes into windows.

Q. Is this normal behaviour for PC's these days? Last PC I built was about 10 years ago and all you have to do was turn it on!

I'm also experiencing nvlddmkm issues which result in the screen going black randomly or rebooting itself. I'm working my way through trouble shooting this so will see if I need to RMA the 5090 in due course.

Thanks!!
 
Robdav said:
So every time I start the PC I press the power button and the fans fire up at full speed, the LED's fire up and it hums along for a minute or so before the fans settle down and then it shuts down again. If, however, I press the reset button as soon as the fans stop spinning at full speed the PC boots and goes into windows.
Click to expand...
Does it stay shut down if you don't do anything? If so, no, that's not normal, but long(er) boots on AM5 are not uncommon.
 
Tetras said:
Does it stay shut down if you don't do anything? If so, no, that's not normal, but long(er) boots on AM5 are not uncommon.
Click to expand...
I'm not sure. I'll shut it down now, power it on and leave it for a bit and see what happens.
 
OK so from cold. Pressed power button, fans spin up at full speed. This lasts for about a minute. If I don't do anything then shortly afterwards the PC will switch off. If I press the restart button when the fans settle down from full speed the PC boots as normal.
 
I am not turning the psu off at the back or at the wall.

@Tetras - I'd say a couple of minutes from the moment it powered off and it stayed off. I don't recall a "click" but the fans stopped, all the LED's went off too

@MissChief - I will investigate the switch wiring tomorrow and see if it's wrong.
 
Robdav said:
@Tetras - I'd say a couple of minutes from the moment it powered off and it stayed off. I don't recall a "click" but the fans stopped, all the LED's went off too
Click to expand...
Ahh, alright, does sound like it is actually off then! Sometimes boards can appear to be lifeless, but spring back into life.
 
You should have reported the original problem with the 1000w psu to OCUK as you have a warranty with them. Unfortunately now that you have replaced the psu yourself there is a chance that they could wash their hands of it. I do agree with you though, a poor psu such as the RM1000e is not a good fit for that pc and they should have used a better quality psu with a higher capacity.
 
pastymuncher said:
You should have reported the original problem with the 1000w psu to OCUK as you have a warranty with them. Unfortunately now that you have replaced the psu yourself there is a chance that they could wash their hands of it. I do agree with you though, a poor psu such as the RM1000e is not a good fit for that pc and they should have used a better quality psu with a higher capacity.
Click to expand...
Good point pasty.

I've now checked the wiring from the power and reset switches and they are all wired up correctly. I've reset the bios too but that made no difference.
 
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