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  1. Personalize Your Windows | Dell US

    Customizing Windows on your computer not only adds a touch of your personality but also enhances your overall user experience. You can choose your preferred desktop background …

  2. Computer Restarts or Shuts Down Intermittently, Locks Up, Stops …

    Apr 29, 2025 · This article provides recommendations to resolve an issue with your Dell computer restarting, shutting down, locking up or not responding, and similar issues with Windows.

  3. How do I lock my computer? | DELL Technologies

    Jan 23, 2000 · How do I lock my computer? I'm wondering if there's a way to lock my computer so that, when I shut down, someone else can't walk up, turn it on, and access all of my documents.

  4. Padlock symbol in Middle of Screen | DELL Technologies

    Aug 10, 2006 · I have a white padlock (which keeps opening and closing) in the middle of my screen. It is on a square blue background edged in white 3.5cm by 3.5cm. I can't click on it or …

  5. How to Adjust Screen Brightness and Control Brightness Settings …

    Feb 11, 2025 · A dim screen can be caused by adaptive brightness settings. Follow the steps for your Windows 10 or 11 system to turn off adaptive brightness and manually adjust screen …

  6. Windows Randomly Restarts or Auto Reboots | Dell US

    Learn how to disable automatic restarts in Windows. Resolve random restarts or restart loop in Windows 10 and 11.

  7. How to Physically Secure Your Dell Computer or Monitor

    Jul 25, 2025 · How to Physically Secure Your Dell Computer or Monitor Summary: You can secure your Dell desktop, laptop, docking stations or monitors with a cable, using the security …

  8. Set password for start up on my lap top | DELL Technologies

    Apr 21, 2024 · How do I start using a password when I start up my laptop?

  9. Monitor displays LOCK symbol | DELL Technologies

    Feb 22, 2007 · Monitor displays LOCK symbol i have a dell 15 inch flat panel monitor and when even i press any button on it ... it displays a LOCK symbol???? i cant get rid of it and will …

  10. How to turn Num Lock key permanently on with Inspiron 5570

    Feb 10, 2023 · Yes, it's possible to turn on Num Lock key permanently using the BIOS. Here are the steps: Restart your computer and access the BIOS settings by pressing the key that …