Power consumption may be slightly more than expected on a portable Windows Vista-based computer. This problem occurs if the following conditions are true:

• The computer is using a Serial Advanced Technology Attachment (SATA) hard disk that is using a SATA Advanced Host Controller Interface (AHCI) driver.
• The hard disk supports Device-Initiated Link Power Management (DIPM) but does not support Host-Initiated Link Power Management (HIPM).
• The computer is idle and running on battery power.

This problem may cause a slightly increased drain of battery power.

Note The increased power consumption is small and may not be noticeable to a typical user.