XP SP2 Power Management Problem

[MetalFRO]

I have a set of 3 Dell Precision 390 workstations I'm having a time

with. I have disabled any "low power" settings I am aware of, set the

BIOS to turn off the power conservation settings (to enable "more

functionality"), set the power settings in XP to "Always on", and

configured all sub-settings to "Never" (including System Standby),

disabled Hibernation, etc. Basically, I've removed any possibility

(that I'm aware of) that the system would go into a low-power state.

Well, these 3 machines are STILL doing that. Here's my quandry: they

have to be quick-response machines because they are used by physicians

in our hospital for patient care. Currently, the PCs take several

minutes to "wake up" from the low-power state; occasionally, they

won't "wake up" at all, & have to be manually powered down & back on.

At first I thought it was a hardware issue, but when I discovered it

was happening to all 3, I knew something was up. They are stand-alone

machines, which means the EZ-GPO power management options that I use

w/ all our other PCs via AD don't apply. So, my question to everyone

is this - am I missing something? Is there some power management

setting in the BIOS or in XP that I'm missing somewhere, or some other

utility/tweak/tool (preferably free) that I can use to FORCE those PCs

to stay on at all times?

PC: Dell Precision Workstation 390

Monitor: Dell 24" widescreen, using DVI input

Any help would be greatly appreciated.

[MetalFRO]

Nevermind, I figured it out. I had the EZ GPO loaded to control power settings, but the Group Policy wasn't applying due to the PC being logged on locally, so the local logon & domain policies were fighting one another. The machine reverted to default settings, despite the settings that had been locally configured. I will have to wipe/reload the PC in question to remove all traces of the EZ GPO & just set it up as a locally logged on unit.