Question about Microsoft Windows Vista Ultimate Edition
I'm having 2 related but separate issues with the Vista Ultimate which came pre-installed on my HP Pavilion.
The first problem is that the machine wakes up on it's own after I have manually put it to sleep. This typically happens in the middle of the night but sometimes in the middle of the day. I've checked the "Power Troubleshooter" entries in the event log and they list the "Wake Source" as "Unknown" which isn't terribly helpful. I've already disabled my NIC, Mouse, and Keyboard from being able to wake the machine and gone through all of the devices in device manager and there are no other devices that I can find that are enabled to wake the computer. I've also gone through all of the scheduled tasks (including hidden ones) and none of them have permissions to wake the computer to run. I'm not sure what else to try. I did not have this problem when the computer was new so I suspect it may be related to something I have installed, but I would like to avoid uninstalling everything to troubleshoot that idea. What else can bring a computer out of sleep?
The second problem is that the machine never goes to sleep anymore, so when it wakes up it stays on wasting power. What I would like to find, if they exist, are tools which will help me troubleshoot what exactly is preventing the machine from going to sleep. Like the first problem, this did not happen when the computer was new. If I can solve this problem, I can live with the fact that the machine wakes up on it's own.
Another way to solve this would be to let it do the update at night, but then set it to go back to sleep. You can do it if you are comfy changing the registry values. Described here. http://annoyances-resolved.blogspot.com/2009/10/computer-goes-back-to-sleep-after-wake.html
Posted on Oct 06, 2009
Sounds like you've tried all the obvious things. Did you check the BIOS settings and turn off all of the WAKE ON settings in there? Otherwise, it sounds like you might have a third party program which is scheduling without your knowledge (check your start up programs and running processes during normal use). If, when asleep, the machine runs a fan, it may also be waking up for the OS to receive a power or overheat warning message from the BIOS.
Problems with machines not going to sleep when asked are often related to drivers that are not unloading when asked to prepare for the sleep/hibernation process. If you have installed any new hardware (or driver heavy software like specialized encryption or hard drive management stuff) trying uninstalling it and testing the sleep functionality.
Posted on Nov 16, 2007
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