How to enable hibernate acpi in xp 64 bit on dell optiplex 760

Posted on 2009-12-26
Last Modified: 2013-12-01
dell optiplex 760 desktop, installed oem windows xp with sp2 64-bit
installed all windows updates and all hardware drivers i could find.
the hibernate tab is missing in power options, however computer mgmt reports an acpi enabled processor.
how can i enable hibernation and make acpi active ?

installed drivers:
- Intel Graphics for XP 64 r14. -
  Intel Q43/Q45/G43/G45 (Eaglelake) Graphics Controller
- infinst
- intel 82567LM-3 nic A02_R252705 r11.5.4.0
- R228747 audio, A10
- viewsonic Standard_Monitor_Driver_Unsigned_Win_x64
- Intel_AMT-HECI_A00_R197546 "pci simple comm. ctrl"
  Intel(R) Management Engine Interface
- Intel_AMT-SOL--LMS_A00_R197547 "pci serial port"
  Intel(R) Active Management Technology
Question by:Lieven Embrechts
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    by:Lieven Embrechts
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