XP will not "Wake the computer to run this task"

OK, I've been crawling all over the net and can't find a solution to this:

I have a laptop on which I've scheduled a weekly defrag via task scheduler.
I want it to run at 2am.

Task Scheduler is enabled, and all of my scheduled tasks are configured to
run under a local machine account with a non-blank password.

If I'm actively logged on, they all run just fine. If nobody is logged on,
they run just fine, too, you just don't see them pop up. They all run as a
local user account with a valid password.

Here's the problem: once the laptop goes into hibernate mode, none of the
tasks that are scheduled wake the computer up to run.

For the maintenance tasks like disk defragmenting, I tried to have them
start at one o'clock or two o'clock in the morning, but they don't begin to
run until I manually resume from hibernation before I go to work in the
morning.

Laptop is an ACPI compliant Dell; ACPI shows OK under Computer in Device
Manager. Task settings are exactly the same as my work PC, which DOES wake
up from hibernate to run the task.

Only significant O/S difference is Laptop is connected to a wireless LAN via
a built-in wireless NIC, and PC at work is on a wired LAN through a Broadcom
ethernet NIC. Both run XP SP-2 w/ all Microsoft Update patches applied.

Laptop also has Norton AntiVirus / Internet Security with all extra bells
and whistles turned off, while PC workstation runs MacAfee / Network
Associates EPOAgent bundle.

I can't figure it out. Can anyone help?
Task settings are as follows:

Main "Task" tab in Task Properties dialog:
-----
Run as: MyLaptop\AnAdminUser

Run only if logged on: Unchecked (no)
Enabled: Checked (yes)


Schedule tab:
-----
Daily, 1am, every 1 day(s)


Settings tab:
-----
Scheduled Task Completed group:
Delete the task if it is not scheduled to run again: Unchecked (no)
Stop the task if it runs for: Unchecked (no max time)

Idle Time group:
Only start the task if the computer has been idle for at least: Unchecked
(no idle requirement)
Stop the task if the computer ceases to be idle: Unchecked (no)

Power Management group:
Don't start the task if the computer is running on batteries: Unchecked (no)
Stop the task if battery mode begins: Unchecked (no)
Wake the computer to run this task: Checked (yes)

.

Relevant Pages

  • XP will not "Wake the computer to run this task"
    ... I have a laptop on which I've scheduled a weekly defrag via task scheduler. ... Only start the task if the computer has been idle for at least: ...
    (microsoft.public.windowsxp.perform_maintain)
  • RE: XP will not "Wake the computer to run this task"
    ... Have you tried to make your laptop come on with the timer in the BIOS. ... I have a laptop on which I've scheduled a weekly defrag via task scheduler. ... Only start the task if the computer has been idle for at least: ...
    (microsoft.public.windowsxp.general)
  • XP will not "Wake the computer to run this task"
    ... I have a laptop on which I've scheduled a weekly defrag via task scheduler. ... Task settings are exactly the same as my work PC, which DOES wake ... Description of the Different Advanced Power Management States ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: XP will not "Wake the computer to run this task"
    ... I have a laptop on which I've scheduled a weekly defrag via task scheduler. ... once the laptop goes into hibernate mode, ... Only start the task if the computer has been idle for at least: ...
    (microsoft.public.windowsxp.general)
  • RE: XP will not "Wake the computer to run this task"
    ... may be a BIOS issue where it's not properly handling wake-up notifications? ... You will have to go into the bios of your laptop and find the section ... I have a laptop on which I've scheduled a weekly defrag via task scheduler. ... Only start the task if the computer has been idle for at least: ...
    (microsoft.public.windowsxp.general)