Can't Sleep XP

[SilverXP]

for some reason, from the time i installed xp on my pc i can't get it to go into sleep mode. The icon is there in the shut down menu but it is greyed out, i've tried turning hibernation on and off and changed the power settings in the bios.
I have a Gigabyte mainboard, duron 750, 768MB ram, agp Rage 128 pro 64 mb video, sb live 5.1 sound,

[Disk_Contented]

Most likely:
a part of your hardware setup is not (fully)compatable.
One of your drivers is not (fully)compatable.
Least likely:
Bios ACPI setup.

[Chris1808]

go to help & support & search for hibernate
select full text search matches
one of the results tells you how to manully hibernate machine

[ESALADUANE]

From "Windows - Inside Out":

Your computer won’t enter standby or hibernation.

Power management features—in particular standby and hibernation—rely on device drivers that support power management in addition to compatible hardware. In particular, incompatible video drivers prevent these features from working. The built-in VGA driver, for example, is a bare-bones driver that doesn’t support power management. If standby and hibernate don’t work, install an updated driver for your display adapter.