The Presario CQ60 is a fairly new machine that probably has acpi. If you are using OpenBSD i386 it has apm by default. OpenBSD amd64 has acpi by default.
You might want to try using the kernel configuration option at boot to disable apm as described in this post
http://www.daemonforums.org/showthread.php?t=3638
If this works then the post tells how to make it permanent.