PC starts up after shut down.

marc512 · 21 Nov 2009 at 21:01

I thought i could put up with my pc starting up after shut down and before i switch the main switch. but i couldnt take it

now i HAVE to turn it off by the wall.

If i just click "shut down" it shuts down perfectly well, after shut down i wait a few seconds and it powers back up again ( like a restart? ). even if i press the power button, and let it shut down. it still restarts.

What could be the problem?

also, when i do switch it off by the wall ( when i shut the pc down the normal way) if i wait the few seconds, the lights all come on for the fan etc then go off. very strange when there is no power.

cb_linus · 21 Nov 2009 at 21:22

Maybe check BIOS for something like wake on lan?

BlackBat · 21 Nov 2009 at 21:53

also, when i do switch it off by the wall ( when i shut the pc down the normal way) if i wait the few seconds, the lights all come on for the fan etc then go off. very strange when there is no power.

Residual power left in PSU capacitors.

Hudzy · 22 Nov 2009 at 00:18

Not an Asus motherboard is it?

TheTard · 22 Nov 2009 at 00:44

That's a very strange problem. Does the PC turn on when you turn it on at the mains, or do you have to press the power button? i know that sounds weird but i couldnt think of any other wording lol

k3wt · 22 Nov 2009 at 04:13

my asus board does this as well. really peees me off. mine generally does it on hibernate tho. i found out that it also turned itself back on for windows update - 3am or something? anyway i turned that off and only seek for updates manually. still doesnt explain the random wakeup after whilst hibernating though

Hudzy · 22 Nov 2009 at 13:13

The OP does sound exactly like my problem. Computer turns itself back on after 3 seconds of being off unless I switch it off at the socket. Absolutely nothing I've been able to do about it for over a year now since I built it.

d_brennen · 22 Nov 2009 at 13:20

Sounds like a BIOS setting, something like auto resume after power off. Usefull in a file server type setup...

IAmATeaf · 22 Nov 2009 at 14:09

Have you checked and turned off all the wake up on... features in the BIOS?

ETNiES · 22 Nov 2009 at 15:47

Has to be a BIOS problem, have you read about anyone else having the same problem on your mobo?

marc512 · 22 Nov 2009 at 16:43

I see nothing in the bios. My motherboard is a MSI P55 GD65. Iv looked through all the menus and i see nothing.

marc512 · 22 Nov 2009 at 16:45

TheTard said:
That's a very strange problem. Does the PC turn on when you turn it on at the mains, or do you have to press the power button? i know that sounds weird but i couldnt think of any other wording lol

good question, no it doesnt! im beginning to wonder it might be a dodgy power switch or something on the case. Im still checking all the bios settings.

Hudzy · 22 Nov 2009 at 18:02

All my wake options are disabled in bios too. I've had the problem over two cases so it's not the switch.

TheTard · 22 Nov 2009 at 18:35

marc512 said:
good question, no it doesnt! im beginning to wonder it might be a dodgy power switch or something on the case. Im still checking all the bios settings.

hmmm... what a situation. Do you have anything that connects to the computer wirelessly? if my computer is off and i use the Remote app on my iPod, it turns my computer on. so yeah, keep checking the BIOS settings