wierd windows 98 shutdown

Fast Shutdown Registry Key Is Enabled

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT or Windows 2000, you should also update your Emergency Repair Disk (ERD).

The Microsoft System Configuration utility includes an option to disable Fast Shutdown. If this option is not set in Windows 98 Second Edition, your computer may reboot instead of shutting down. To resolve this issue, change the FastReboot data value from 1 to 0 in the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Shutdown

NOTE: After you apply the Windows 98 Second Edition Shutdown Supplement, the Disable Fast Shutdown option is no longer listed on the Advanced tab in Msconfig.exe.