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I'm got a custom built PC running 64 bit Windows 7 Ultimate. So far everything works great except for one thing: it will not wake up from sleep mode for a wake timer or scheduled task.
Sleep mode itself works great. If it's sleeping, it wakes successfully when I press the power button, mash the keyboard, wiggle the mouse, or send a WOL packet. The only problem is wake timers. I even tried the program WakeupOnStandBy but it looks like that uses wake timers, so it doesn't do anything for me either.
And yes, wake timers are enabled:
Any ideas on how to fix the problem, or troubleshoot it? I'd imagine that there would be a log somewhere telling me exactly why the wake timers are having trouble, but if there is I haven't found it.
I've found that wake timers work exactly once after a reboot. After that one time, it will wake up fine, but not from a wake timer. I've tried a few little things to try and get them to work more than once: striping the PC down to bare essentials (CPU, MB, Memory, HD), disabling and re-enabling wake timers, changing the system clock, probably others. Nothing has worked so far. Going to see what the MB manufacturer has to say – Joe – 2010-09-20T02:20:57.813