Shutting down issue on Windows 11 system

[bx1025]

Hi All,

Recently I have been experiencing some strange issues with my computer, running Windows 11:

When I shut down or reboot windows 11, after the shutdown sequence completes the power remains on my computer but all the hardware turns off (screen is blank, keyboard and mouse LEDs turn off, etc, but the power/GPU LEDs & fans stay on) after this I have to hold the power button down to force it to complete the shutdown sequence as the reset button is not working (works in other circumstances). The system went straight to bios after I turned on the computer again by pressing the power button. I have to press F1 to go in Bios and leave bios in order to start the computer.

Please see the specs of my computer below:

System Windows 11 OEM
Security: Norton 360
Motherboard: Asus Prime Z790-A
CPU: i9-13900K - No Overlocking
Storage:

1. Samsung SSD 980 PRO 1TB - Storing System Files
2. Samsung SSD 980 PRO 2TB
3. Western Digital wd4005fzbx-00k5wb0

GPU: EVGA RTX 3070 XC3 Ultra 8GB

RAM: 64GB in total: 2 sets of G.Skill 32GB( 2X16GB) Kits DDR5 Trident Z5 RGB C36 6000 MHZ Black (F5-6000J3636F16GX2-TZ5RK -XMP enabled to 6000. (tried to disable XMP, the issue remains), tried with 1 set of 32GB kits, the issue remains)

Power Supply: EVGA Super Nova P5 850W Platinum Fully Modular Power Supply (220-P5-0850-X4)
Cooler: Noctua NH-U12A

I tried to shut it down in the safe mode and everything is fine. I have had this issue since the first day I assembled this computer. This issue doesn't happen all the time. I reinstalled Windows 11 a few times due to this issue. This issue doesn't happen all the time, the first month of win11 reinstallation it may happen only once, the second month it happens 2-3 times, the third month it happens 6-10 times, etc.

Can anyone please have a look and let me know how to resolve this issue?

Thanks in advance,

Ben

 

[meatwar]

Its usually a normal situation on motherboards, the power stand-by of 3.3v and 5v, some models don't have any visible stand-by leds or modern led light effects, this minimal power state only can be cut off after disconnecting the PSU power cord or her On/Off switch if present. For example, this is what enables USB ports to charge devices.
This is also used as an indication to the user that the system motherboard still has power and it needs to be cut off from totally if it needs to change any hw component on the system.
Regarding the direct access bios, these are also new functions that allow the system to enter directly to bios by pressing the power button X secs, can't confirm it on your model, unless the previous shutdown was a soft-off/sleep

Some settings can be configured in bios, read the Asus 700 User Guide
6.14 APM Configuration - ErP Ready settings and LED Lighting settings

An advice, always use a simple UPS at least for the system PSU and/or an AC schuko on/off switch.

EDIT: Your right @Bill_Bright my bad didn't paid attention to the fans still spinning

EDIT: @bx1025 is this a machine of your own assembly? If so, re-check seated motherboard etc... for short-signal passage to the chassis.
For a full debug of this situation, if you have experience on assembly, get the motherboard and that PSU out of the chassis on to a table.

 

[Bill_Bright]

but the power/GPU LEDs & fans stay on

Its usually a normal situation on motherboards

No, sorry but that is not normal. The fans should definitely power off too. Some motherboards might leave an LED lit to indicate the presences of the +5Vsb voltage, but typically the graphics card will not.

Also, the only voltage that should be present during standby is +5V. There is no 3.3VDC voltage present when in standby mode.

You are correct otherwise. For PCs, the ATX Form Factor standard requires all ATX compliant PSUs to output +5Vsb standby voltage to multiple points across the motherboard when the computer is shutdown, the power supply is still plugged into the wall, and (if equipped) the master power switch on the back of the PSU is set to "|" or "On".

This +5VDC is used to provide power to many things, including the motherboard so the case's front panel power button can function. It also keeps many circuits "alive" for various functions including Wake on Mouse, Wake on Keyboard and Wake on LAN. If you can wiggle your mouse or press a mouse button or keyboard key to wake your computer, power IS being supplied to the applicable USB ports your keyboard and mouse (or their wireless dongle) are connected to. This +5Vsb voltage is also used to keep data in memory using a low voltage state for faster boot times.

However, there should be no voltage to any of the fans.

I have to hold the power button down to force it to complete the shutdown sequence

Understand holding down the power button for 4 - 5 seconds does typically force a shutdown. This is useful (as a last resort option - due to possible data corruption) when the system locks up for other reasons. HOWEVER, this is NOT a complete shutdown. A complete or "cold" shutdown (or "cold" reboot) requires you to flip the master power switch on the back of the PSU to "0" or "Off", or unplug the PSU from the wall. This is the only way to completely remove all voltages from the system, including the +5Vsb standby voltage.

@bx1025 - Unfortunately, there are many possible causes for this issue. To make matters worse, your issue is intermittent and intermittent problems, problems you cannot replicate on demand, are often the most difficult to troubleshoot.

Your computer is not completely shutting down into sleep mode. I recommend you do a "cold" shutdown, then disconnect all USB devices, except your keyboard and mouse. Then power up and see what happens over the next couple days. If you still have the problem, check out your power options and work your way through the suggestions found here. Sorry I cannot be more exacting - like I said, there are many possible causes for this problem.

 

[chrcoluk]

Agree with Bill its not normal for fans to stay running, I suggest disconnecting any addon PCIE devices one at a time to see if it persists, likewise with USB devices or storage devices, granted you might not be able ti disconnect things critical for booting windows.

 

[RJARRRPCGP]

Try this in the command prompt/terminal:

powercfg /H off

Then reboot once, before shutting down.