Hi, John.
This is a power management issue, likely caused by peripherals of new
devices\ cards attached during setup of upgrade.
Firstly, there are different standards by which
sleep (standby and hibernation being the most common sleep states) are
achieved: APM (advanced power management) and ACPI (Advanced Configuration
Power Interface). To verify which HAL (hardware abstraction layer) you
have, do the following:
1. type DEVMGMT.MSC at the Start\Run box to launch Device Manager
2. at the top, click on the plus sign to expand Computer. you will either
see ACPI or standard PC.
Now, to address sleep, there are several factors that are involved in order
for sleep to be achieved. Basically, we need to have every device and its
driver (software that instructs the device to work and interoperate with the
CPU-- central processing unit a.k.a. brain of PC). For sleep to work, we
must have the following:
a. device says communicates where it is (specifically which BUS and where on
the BUS)
b. what sleep states it's capable of
c. which sleep state it's currently in
d. the function of the device
e. class and device drivers
So, if we can't meet all these criteria, the particular device (or poorly
written device driver) may prevent your system from achieving sleep. If
your system could sleep before but not now, try removing all peripherals and
add them back one at a time, achieving sleep in between till you've
identified the device that is preventing it.
Along the same lines, it's a good practice to have as little attached to the
computer when first installing the operating system, since you could lose
out on an ACPI HAL because of a "legacy" (non-acpi compliant) device.
313290 Your Computer May Not Shut Down After You Upgrade to Windows XP
http://support.microsoft.com/?id=313290
810903 "It is Now Safe to Turn Off Your Computer" Error Message When You Try
to
http://support.microsoft.com/?id=810903
309283 HAL Options After Windows XP or Windows Server 2003 Setup
http://support.microsoft.com/?id=309283
--
Have a great day!
Graham, MCSE²+I, MCSA
Microsoft Corporation Exchange Enterprise Messaging
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