Quote: Originally Posted by csoyen
I'm having a problem.
I can't put my computer to sleep ou hibernate ... okay, i can buy only for a few seconds. After that computer wake up.
Someone can help me?
I don't know what i need to do.
There are lots of reasons a computer will go to sleep and then wake itself right back up...
Others have already mentioned the gadgets thing... any gadget that accesses the internet will trigger the "network active" timer, preventing standby.
In my other thread I discovered a disk timestamping routine that was keeping my systems awake for weeks at a time... The solution was to edit the registry at:
setting TimeStampInterval to 0.
Another cause is if you have the "Computer Browser" service running on a Workgroup with multiple computers... If your system is the "Master Browser" (and there's no visual indication it is or isn't) the other computers will wake it up to check for new shares on the network.
Still another cause could be your BIOS settings... In my bios there is a setting for "Wake on PCI-E device"... which is my video card. What happens is that you put your system into standby, this stops the monitor signals, the monitor goes into standby and signals the video card... which then wakes your computer back up.
Also, as mentioned, if you are using USB devices such as wireless or a docking port, they might be sending timing pulses that will keep the system awake. Many motherboards will let you set jumpers to deprive these devices of power when the system goes into standby... so you may want to check that.
Some software will even prevent standby if it's doing something... For example Media Player Classic will not allow standby if it's playing.
This is not always an easy thing to troubleshoot... I wish you good luck with it.