[Daeymon]

CAUTION- This could cause your computer to not boot properly. I reccomend tying step #2 before step #1.

#1: Click - Start - Control Panel - Performance and Maintenance - Power Options Tab
Then click APM - Enable Advanced Power Management Support

Then your computer should shut down again.

#2:Go to Start-click RUN- type regedit and navigate to
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Set the value of PowerDownAfterShutdown to 1.



For the second guy....

Here are some things that have produced this reboot-instead-of-shutdown symptom:

By now, the Roxio/Adeptec Easy CD / Direct CD software is well documented as being the major cause of this undesirable shutdown behavior. SOLUTION: Roxio has released new drivers here to solve this problem in both the Platinum and Basic editions of Easy CD Creator 5. As expected, at least half of the Win XP shutdown problems went away with the release of these patches. One warning about this patch: Be sure to read the directions! Roxio Easy CD Creator Platinum 5.0 can be a real hassle to get working under Win XP, and there is the risk of your computer not booting if you blindly go ahead and install it without first consulting the Roxio Web site. It should also be mentioned that Roxio’s Take Two backup program (normally part of Easy CD Creator 5 Platinum) is uninstalled when the Roxio patch is applied.

Direct CD. Many Easy CD users (but not all) found that installing Easy CD 5.0 does not cause the shutdown problem, provided they do not install the Direct CD component.

UDFRINST. Several people solved this reboot-on-shutdown problem by deleting the UDFRINST file. This file is part of the Roxio CD-RW software for systems not using Direct CD.

CDRALW2K.SYS. file (version 1.0.0.1048) has been identified as the Roxio file causing a shutdown problems and error conditions. When the file is deleted or renamed, the problems went away. (Of course, you lose your CD functionality that way, too.)

Whether or not APM is enabled makes a difference — but the effect could go two ways. Some users report that XP reboots on shutdown if APM is enabled, but shuts Windows down just fine if APM is disabled. Other users report exactly the opposite behavior. The issue seems related to the computer’s specific hardware or BIOS — so, as with all NT operating systems, stick to the Hardware Compatibility List where possible. Meaning, update your bios.

Y-SB3 Logitech Internet Keyboard can also cause this problem. If you use it as a simple generic keyboard, there’s no problem; but, if you install the Key Commander software that drives the special Internet functions, Win XP will restart instead of shut down. Unfortunately, Logitech has decided that they will not be updating this driver for this keyboard.

Logitech MouseWare 8.6. Windows reboots when shutdown is attempted. The software caused a BSOD with KBDCLASS.SYS. Removing the software solved the BSOD the problem.