PC power on automatically after shutdown

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kochi974

Thread Starter
Joined
Oct 6, 2017
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1
Hey,

Im' myself a Technician in IT since 2004.

I have a PC, when i shutdown, PC turn on itself after 5 seconds.

* I already tried :

- Restore bios to default, and remove any wake up features (lan, usb keyboard...), play with S1, S3 power features => same issue
- A new ATX power supply => same issue
- Remove any sata devices (hard disk, optical drive), shutdown, it reboots after 5 seconds => same issue
- Remove the power button, and start using the jumpers and a screwdriver => same issue

I think the issue comes from the mainboard itself, specially the timer chip.

So guys, do you have an idea to fix that ?

Thank you very much for all your replies !
 

managed

Allan
Moderator
Joined
May 24, 2003
Messages
15,494
Please download and run this program and paste the output text in your next reply, it will show us what hardware is in your PC :- https://static.techguy.org/download/SysInfo.exe

Next select Start, (Start then Run in XP), type sysdm.cpl, and press ENTER. Click the Advanced tab, and then click the Settings button under 'Startup and Recovery' (as opposed to the other two Settings buttons on that tab). Uncheck Automatically restart.

That should stop the restarts and may show what the underlying cause of the problem is. Now when you shutdown the PC you may get a BSOD or error message, if so please make a note of the text and include that in your reply as well.
 
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