I have the exact same problem on a Dell Inspiron 530 with Vista Home
Prem SP1. Did you ever get this solved? I have been able to determine
that it occurs coming out of sleep mode.



satch;1000530 Wrote:
I have a 3GHz dual core with 8GB of ram on Vista 64 bit and the
"system"
process, that normally should only be a couple of percent, is always
around
47%, regardless of what I do to the system (one of the cores is always
at
95-100%). Using process explorer it's showing that it is the acpi.sys
process and I'm unable to do anything to that thread. The actual
start
address within process explorer is
"acpi.sys!DeRegisterOpRegionHandler+0x48cc". I have tried to disable
all
power aspects of the pc from within the bios (full disable and change
from
ACPI capable to standard mode), this causes Vista too not boot...trying
to
change the PC type from within vista to a standard pc is not accepted
by the
OS. Any thoughts? I'm dreading a re-install from scratch.


--
dad1956
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