Question Pc wont start unless unplug and plug back in

[cben66]

My pc wont start unless I unplug or shut off the switch to the psu and resupply power. I have already switched out the psu which also included all cables to the mobo. And i alos swapped the ram checked all connections. I tried starting without the gpu attached also. I'm running windows 11. Bios is fully up to date as are all other programs and software updates.

Asus rog z790e wifi
Intel i7 14700 kf
Fury beast ddr 5 32 gb
Nvidia 4070 super founders
Samsung 990 pro 1tb and 2 tb m.2
Lian li galahad II lcd
Lian li uni fans with hub

 

[helpstar]

which PSUs? same or didferent model?
was it working before?
PSU cables swapped as well? did you use the cables from the new PSU ?
check RAM for errors with memtest

replace cmos battery

 

[cben66]

which PSUs? same or didferent model?
was it working before?
PSU cables swapped as well? did you use the cables from the new PSU ?
check RAM for errors with memtest

replace cmos battery

Psu was evga switched to coarsair. Both 1000w. Cables were swapped. Used cable mod cables with the evga. Took out and used what came with the coarsair. Ram mem test was ran. But I did switch my ram out to know good ram also. I did replace the cmos battery as well.

 

[cben66]

Psu was evga switched to coarsair. Both 1000w. Cables were swapped. Used cable mod cables with the evga. Took out and used what came with the coarsair. Ram mem test was ran. But I did switch my ram out to know good ram also. I did replace the cmos battery as well.

Also ran sfc and dism both checked out fine

Psu was evga switched to coarsair. Both 1000w. Cables were swapped. Used cable mod cables with the evga. Took out and used what came with the coarsair. Ram mem test was ran. But I did switch my ram out to know good ram also. I did replace the cmos battery as well.

 

[Ralston18]

When the PC fails to start the first time are there any beep codes or diagnostic LEDs?

(You may need to connect a small speaker the motherboard to hear any beep codes.)

When the PSU has started and has been in use what is your shutdown procedure?

Disable all power and screen savers, etc. to determine if that makes any difference.

Just as a matter of elimination look in Reliability History/Monitor and Event Viewer. Either one or both tools may be capturing some error codes, warnings, or informational events that correlate with the start failures.

 

[cben66]

When the PC fails to start the first time are there any beep codes or diagnostic LEDs?

(You may need to connect a small speaker the motherboard to hear any beep codes.)

When the PSU has started and has been in use what is your shutdown procedure?

Disable all power and screen savers, etc. to determine if that makes any difference.

Just as a matter of elimination look in Reliability History/Monitor and Event Viewer. Either one or both tools may be capturing some error codes, warnings, or informational events that correlate with the start failures.

Once I get it to turn on it runs fine. Once I shut down from windows it goes back to doing the same thing. Kernal 41 shows as an error in event viewer. I've been down the list of what to do to fix that 2 times now. That's why I replaced the psu.

 

[Ralston18]

Just to be sure: you right click the Windows icon (usually in the lower left screen corner) and select "Shut down or sign out" and then shut down from there - correct? Do you turn off any power switches thereafter?

What action(s) do you take the eventually get the PC to turn on?

= = = =

Look in Reliability History/Monitor. Much more end user friendly than Event Viewer and the timeline format may reveal some pattern of events.

And any given entry can be clicked for more details. The details may or may not be helpful.

Just for the record, open Reliability History/Monitor and expand the screen so all can be seen.

Set the view to Days and select a day with the most errors, etc.. Take a screenshot and post the screenshot here via imgur (www.imgur.com > green "New post" icon).

If necessary to show more days, just take and post screenshots of those days as well.

 

[cben66]

Just to be sure: you right click the Windows icon (usually in the lower left screen corner) and select "Shut down or sign out" and then shut down from there - correct? Do you turn off any power switches thereafter?

What action(s) do you take the eventually get the PC to turn on?

= = = =

Look in Reliability History/Monitor. Much more end user friendly than Event Viewer and the timeline format may reveal some pattern of events.

And any given entry can be clicked for more details. The details may or may not be helpful.

Just for the record, open Reliability History/Monitor and expand the screen so all can be seen.

Set the view to Days and select a day with the most errors, etc.. Take a screenshot and post the screenshot here via imgur (www.imgur.com > green "New post" icon).

If necessary to show more days, just take and post screenshots of those days as well.

Correct. I shut down from windows. I have also disconnected everything now except a new keyboard and mouse and even a new display port cable. Still the same issue

 

[Ralston18]

What specifically do you do that consistently gets the PC to turn on again?

How is power being provided to the PC/PSU?

Direct from a wall outlet or via some combination of extension cords, power strips, surge protectors, UPS, etc...?

Any other connected devices using the same power connection path?

 

[cben66]

What specifically do you do that consistently gets the PC to turn on again?

How is power being provided to the PC/PSU?

Direct from a wall outlet or via some combination of extension cords, power strips, surge protectors, UPS, etc...?

Any other connected devices using the same power connection path?

I have to turn the psu of wait and turn back on could be 1 or a couple times to get it to turn on. I had it plugged in direct to wall and tried surge protector. Tried different power cable new to psu also tried different outlets on in different rooms

 

[Ralston18]

Reading back the one "constant" is that the problem is intermittent and, being so, may possibly be related to a loose connection. Something that once the system does manage to start then warms up, expands, tightens the connection and all is well again until the next shutdown.

It may also be that all that is needed is a bit of vibration or movement to get the system to start again.

= = = =

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. If uncertain, disconnect and reconnect. Likewise for slotted components. Leave the CPU alone for the moment.

Use a bright flashlight to fully and carefully inspect for signs of damage: bare conductor showing, melted insulation, browned or blackened places, swollen components, corrosion, moisture, kinked or pinched wires, loose or missing screws, cracks, scratches, dead bugs, bent supports, gaps in solder connections, anything loose at all.

 

[cben66]

Reading back the one "constant" is that the problem is intermittent and, being so, may possibly be related to a loose connection. Something that once the system does manage to start then warms up, expands, tightens the connection and all is well again until the next shutdown.

It may also be that all that is needed is a bit of vibration or movement to get the system to start again.

= = = =

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. If uncertain, disconnect and reconnect. Likewise for slotted components. Leave the CPU alone for the moment.

Use a bright flashlight to fully and carefully inspect for signs of damage: bare conductor showing, melted insulation, browned or blackened places, swollen components, corrosion, moisture, kinked or pinched wires, loose or missing screws, cracks, scratches, dead bugs, bent supports, gaps in solder connections, anything loose at all.

The only constant is that it has to be unplugged and plugged back in every time. I have checked all connections and dusted out when I put in new psu

 

[Ralston18]

Very much out of ideas.

One thought - this motherboard?

https://dlcdnets.asus.com/pub/ASUS/...draft1.pdf?model=ROG STRIX Z790-E GAMING WIFI

[Do verify that I found the applicable User Manual.]

Check the LEDs referenced on Pages 1-22 and 1-23.

Check while running, after the system is shutdown, prior to the first startup attempt, after the first failed startup attempt, and after the system has finally started.

Look in the Q-Code table (Appendix A) at the end of the manual to learn what any presented codes may mean.

Go through the process a few times. Could be some combination of errors....

Keep notes for comparison and reference purposes.

 

[DaleH]

The only constant is that it has to be unplugged and plugged back in every time. I have checked all connections and dusted out when I put in new psu

Verify that the PS_ON signal goes to 0 volts when power buttone is pressed. Pin 16 on main power connector.