Hello we are having a problem with windows XP entering into standby mode. We have encrypted Hard drives that must be running or in hybernation mode. When the laptop goes into standby windows can't access the encrypted drive so the laptop locks up and we have to do a hard powerdown the laptop to get it working again. We have gone into the Bios and turned off the powermanagement so Windows can manage the power. We set the power option in Windows to never turn off the hard drive and never go into standby. However from time to time our laptops enter standby mode. We have been able to recreate the problem by setting the laptop to go into standby after 2 mins of inactivity on battery. I did find an interesting event in the system log, Event ID 240 "A request to suspend power was denied by TdmService.exe" This is the behavore that we want windows to take but I have not been able to consistently get the laptop to not go into standby.