I have a 2 week old Dell Studio 540S (Win 7/Ult/64). Power plan is the default for the power switch (hibernate).
When session is done, I press the power button and PC goes into hibernation normally. Problem is machine continually turns itself on between 2:00 & 3:00 AM. The next day, the power light is on steady & the hard drive is running. When I turn the monitor on
, it's at the Logon screen.
I have checked Windows logs (both System & Application) & various items are logged as "started" or "running" at the time of wake-up, but it's not clear what turned the machine on. One log showed "Power Manager" started the system, but the "source" was "unknown".
A McaFee log showed a "Ping" by the Dell laptop on my home network around the time of wake-up, but can't tell if this was the cause.
Actions taken to date (without result):
In BIOS I disabled "Allow remote wake-up" & rebooted.
Windows automatic update has been disabled.
Windows Media Center auto update disabled
McaFee auto update & scheduled scans have been disabled.
Note that the prior machine (Win XP Home) with the same monitor and wireless Logitech Revolution mouse had no hibernation problems. New machine uses the standard Dell USB keyboard which came with the system.
Please advise if this is a known Windows 7 issue (or Dell?) and any additional actions I might take to correct this problem.
Thank you
ccarl1252