Shutdown,Standby,Hibernate not working

[rknight2]

I'm running Win XP on a compaq laptop...Shutdown hangs up at "Windows is shutting down..." and Standby/Hibernate do not restore...Have done alot of checks...I have ACPI so have no Power options APM tab to check on...wondering if CPU at 100% is cause of problem..according to taskmgr - but ProcessExplorerNT shows System Idle 60% and System 30..so I assume this is ok...any suggestions....TIA

[SLK]

How about shutting down in safe mode?.. if works
then either its some running process or some driver which doesn't load in safe mode.

and system using 30% is not right... it happens when some hardware is kind of stuck e.g. printer or HDD/ CD rom are running in non - DMA mode.

try removing any third party drivers you may have ...

also visit www.sysinternals.com and get 'autoruns' and then check...