Why does user logon screen come up after standby mode?
From a security perspective, XP Pro should prompt for your password when coming
off standby or hibernation mode. But if your workstation is at home or in a very
secured location, to disable this important security feature:
- Start the Power Options Control Panel applet
- Control Panel
- Power Options
- Select the Advanced tab.
- Uncheck the Prompt for password when computer goes off
standby check box.
- Click OK.