ScaredWebWarrior

Having recently rebuilt my PC with Windows XP, I found that afterwards I did not have the Standy or Hibernate options - despite having them previously.

I did a LOT of searching around the 'net for possible solutions.

MS update required if you're using 3D screen savers (not me)
May need to update VGA driver (tried that twice without result)
Check that BIOS up-to-date (yup)
Check BIOS ACPI/APM settings (ok)

And possible a few more ideas that didn't help.

Well, then I decided to try somethign drastic and went to

ControlPanel->System->Hardware->DeviceManager

There I selected the 'System devices' and decided to try see what would happen if I uninstalled the 'Microsoft ACPI-Compliant System' entry.

No problem - wanted a reboot.

When it started up the mouse wasn't working, so I navigated to the DeviceManager using the keyboard. Slow going, as I don't do it that way often!

There I saw a whole raft of devices with the dreaded yellow question mark!

Anyway, I was trying to figure out why that could be and then Windows started to detect all the different devices and picking up the drivers for them. I did have to reinstall the VGA driver (maybe back to the ideas above?)

Then, after another reboot, everything was working AND the Standby/Hibernate options were available in the Power applet in the ControlPanel.

Anyway - I've seen so many questions on this I thought I'd share what I'd found.