Computer restarts after selecting shut down when LAN cable is connected.

Spuddy

Spuddy

Spuddy

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As per the title, trying to solve a problem on a friends old PC for them, basically they installed W10 and didn't like it so rolled back to W7. However now, whenever a LAN cable is connected, the pc will not shut down at all - you can select it but it just ends up restarting itself. Remove the cable and all is fine.

Can anyone offer suggestions as to how to fix this? Looked in the boot menu for suggestions but it is the most basic boot menu I have ever seen in my life only allowing to select the primary drive and that is it :confused:
 
Is it actually restarting, or does it actually shutdown (i.e. fans completely stop) and then immediately power back on.

If so, Could be some kind of Wake On Lan issue?
 
Glanza said:
Reinstalled the lan driver?
Click to expand...

Not done this yet, did check for any updates but it just keeps trying to give me the W10 update and none for W7.


HugsHeal said:
Does it boot ok with the LAN cable connected?
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Yes it boots fine, there is some weird message on screen in the boot process and the boot menu screen comes on for a millisecond so I actually had to film the monitor at 240fps on my iPhone then play it back to see which key it was to enter the boot menu -.-

Armageus said:
Is it actually restarting, or does it actually shutdown (i.e. fans completely stop) and then immediately power back on.

If so, Could be some kind of Wake On Lan issue?
Click to expand...

kayomani said:
Turn off wake on lan?
Click to expand...


Looks like it could be a wake on lan issue then. It seems to stop for a split second then fire back up. I did try the wake on lan thing with him over the phone but I'll double check to see if he's done it right now I have the computer here at my place.


EDIT: Whats the best way to disable it, is there more than one? I thought there would have been an option in his boot menu too, but obviously not.
 
Spuddy said:
Looked in the boot menu for suggestions but it is the most basic boot menu I have ever seen in my life only allowing to select the primary drive and that is it :confused:
Click to expand...

Spuddy said:
EDIT: Whats the best way to disable it, is there more than one? I thought there would have been an option in his boot menu too, but obviously not.
Click to expand...

Sounds like you are pressing the key to select a Boot device (i.e. Boot Menu), when you really want the key to enter the BIOS (or UEFI, or "enter setup").

There should be an option in there specifically for Wake On Lan, just set it to Disabled or Magic Packet, rather than "Any Activity".
 
Yeah found it under device manager thanks, it was selected to allow the intel network adapter to wake the computer up and subsequently through the use of a magic packet. All done, thanks guys!
 
Ok so this was working fine, PC has gone back to friends house and now they're saying the same thing is happening again/still happening. It 100% solved the problem at mine.

Could that setting have turned itself back on? I'm at a loss here.
 
Andy90 said:
I had a similar problem in this thread

http://forums.overclockers.co.uk/showthread.php?t=18690838

check out post number 9, transpired it wasn't the LAN ports that were waking the machine up, it was the keyboard (the mouse can do the same thing).
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phazari180 said:
Yep go to the command prompt and type "powercfg /lastwake", will give you an idea what's causing it.
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Thanks guys, Andy used your powercfg -devicequery wake_armed in CMD and it returned the intel ethernet port (the culprit last time) and the keyboard and mouse. Disabled keyboard and mouse, disabled intel port AGAIN.

Shut down the PC, restarted again. It's all saying the wake history count is 0.

However remove the LAN cable and PC shuts down fine.


Accessing the bios on this PC is near on impossible as starting the PC throws up a load of odd screens and says everytime that the AHCI bios has been installed but nowhere does it say how to access it.
 
Spuddy said:
Yes it boots fine, there is some weird message on screen in the boot process and the boot menu screen comes on for a millisecond so I actually had to film the monitor at 240fps on my iPhone then play it back to see which key it was to enter the boot menu
Click to expand...

Just for future reference, there's a nice key "Pause" at every keyboard which halts booting process until any key is pressed :)
 
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