HP Compaq Presario,Presario V4000 Hardware And Software Manual page 49

The system will not decrease hard drive speed while the
notebook is idle.
System-initiated standby will not occur.
To fully discharge the battery pack:
1. Disable hibernation. To disable hibernation:
a. Select Start > Control Panel > Performance and
b. Clear the Enable hibernation check box
2. Select Start > Control Panel > Performance and
Maintenance > Power Options > Power Schemes tab.
3. Record all settings in the Plugged in column and all settings
in the Running on batteries column, so you can reset them
after calibration.
4. Use the drop-down lists to set each item in both columns
to Never.
5. Select OK.
6. Disconnect the notebook from the external power source,
but do not turn off the notebook.
7. Run the notebook on battery power until the battery pack is
fully discharged. When the battery pack is fully discharged,
the notebook is shut down.
Hardware and Software Guide
Maintenance > Power Options > Hibernate tab.
Power
.
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