Something has probably happened to your video drivers.
Normally, if the Hibernate tab is unavailable, your computer does not
support this feature.
Since you had the Hibernate tab at one time, something has happened.
Have a look at this first.
So you've lost (or never had) Standby and/or Hibernate?
http://www.rickrogers.org/standby.htm
More.
Look in the Device Manager for any conflicts.
Open Device Manager...
Start | Run | Type: devmgmt.msc | Click OK |
Device Manager Device Conflicts
[[A black exclamation point (!) on a yellow field indicates the device is in
a problem state. Note that a device that is in a problem state can be
functioning.
A problem code explaining the problem is displayed for the device.
A red "X" indicates a disabled device. A disabled device is a device that is
physically present in the computer and is consuming resources, but does not
have a protected-mode driver loaded.
A blue "i" on a white field on a device resource in Computer properties
indicates that the Use Automatic Settings feature is not selected for the
device and that the resource was manually selected. Note that this does not
indicate a problem or disabled state.
A green question mark "?" in Device Manager means that a compatible driver
for this device is installed, indicating the possibility that all of the
functionality may not be available. ]]
From...
Troubleshooting Device Conflicts with Device Manager
http://support.microsoft.com/kb/310126
If you have to update your video drivers, get them from the manufacturer of
your video card or onboard video, *NOT* Microsoft.
To put your computer into hibernation, you must have a computer
whose components and BIOS support this option.
I.e. the BIOS and video drivers.
[[If the Hibernate tab is unavailable, your computer does not support this
feature. Click the APM tab, click Enable Advanced Power Management
support, and then click Apply.
The APM tab is unavailable on ACPI–compliant computers. ACPI automatically
enables Advanced Power Management, which disables the APM tab.]]
Use Hibernate and Standby to Conserve Batteries
http://www.microsoft.com/windowsxp/using/mobility/getstarted/hibernate.mspx
Unable to Use Power Management Features
http://support.microsoft.com/default.aspx?scid=kb;en-us;302414
No "Hibernate" Button Is Present After You Click "Turn off Computer"
http://support.microsoft.com/default.aspx?scid=kb;en-us;291790
Troubleshooting Hibernate & Standby Issues for Windows XP
http://www.kellys-korner-xp.com/xp_standby.htm
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In
