Knowledge Base

Compaq Screen Does Not Wake Up After EnergyStar Shutdown

Article ID: 132886

Article Last Modified on 11/15/2006

Microsoft Windows 95

This article was previously published under Q132886

SYMPTOMS

When you try to "wake up" your computer after Advanced Power Management (APM) has shut down the screen, the screen may remain in sleep mode. To re-activate the screen you must turn the computer off and back on.

CAUSE

This problem can occur with Compaq computers using the Cirrus Logic 54xxx video chip set because of a conflict between APM and the computer's BIOS.

RESOLUTION

To resolve this problem, use one of the following methods:

Do not enable APM in the computer's CMOS settings.
Do not inform Windows 95 that the monitor is EnergyStar compliant.
Disable APM in Device Manager in Windows 95.
Contact Compaq about obtaining a BIOS upgrade.

MORE INFORMATION

The following computers are known to exhibit this problem:

Compaq Presario 520
Compaq Presario 522
Compaq Presario 524
Compaq Presario 526
Compaq Presario 528
Compaq Prolinea 466

NOTE: These computers do not have a flash (programmable) BIOS, so the BIOS chip(s) must be replaced. To perform this task, please contact Compaq Technical Support.

Additional query words: energy star

Keywords: KB132886