a. If a reports is rendered that an APM BIOS is known to be incompatible or that an APM BIOS is known to have problems, do not attempt to force WinXP Setup to install the APM support. Doing so could cause the computer to behave erratically and even lose data. Also, if it is determined that an APM BIOS is incompatible, make sure the option for APM is disabled in the BIOS.
b. If it is reported that an APM BIOS is not known to be compatible or it is not known to be incompatible, APM might still be used but the user must enable and ensure the configuration of the APM options so that it works properly.
c. To verify that APM support is installed on a computer:
(1) In the Control Panel click Performance, Maintenance, System, Hardware tab, and then click Device Manager.
(2) On the View menu, click Show hidden devices.
(3) If NT Apm/Legacy Support is listed in the details pane, APM support is installed.