computer can't stay in Standby

After a few hours (it varies, but somewhere between 10 - 17hr) I put my computer my computer to standby, it start up automatically again for no reason. It's the middle of the night and no one touched the power button or even was in the room. I've already disabled the mouse, keyboard, and LAN from waking up the computer. Does anyone know how to possibly remedy this?

 

a long shot but did you try checking the bios for any standby options? maybe there is an alarm setup in there... again its a longshot...

 

Is it automatically installing updates and rebooting to finish? I know that can be a problem for some.

Check the event log for errors around that time. If you don't know the time, narrow it down by looking for startup tasks in the log from late at night.

 

It didn't restart, so I don't think it installed any updates.

 

Wait... what did it do, exactly? You mean it turned on but didn't restart? Did it just go to your desktop?

Did it hibernate? Mine's configured to hibernate after a certain amount of time, e.g., sleep after 10 minutes and hibernate after 1 hour (or whatever) of not being used. In that case, you'd notice some activity while it saves the computer's state to disk. Check power management to see if yours might be configured similarly.

 

I don't think it attempted to standby. When I woke up the next morning, it was just idling at the desktop.

 

I had a problem similar to this, and it was fixed by cleaning my registry. (Somehow) You can get such programs from my best free software for windows list.

 

Automatic updates is set to check at 3AM by default. If your system is sleeping at the time, it will wake up and check. I think it's a really stupid idea to have it set to wake up the system at that time.

 

I just verified my hunch that it's not the automatic updates since the computer woke up by itself at around 7:00am this morning.