How to Fix a Black Screen on Boot in Windows 11

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PC Technician
Windows 11TroubleshootingFixHardware

The Problem

Power lights and fans work, but the screen stays black—before Windows, after the logo, or at login with only a cursor. That is different from "second monitor not detected" when Windows is running fine on the laptop screen. For dual-monitor issues, use second monitor not detected instead.

No Picture at All (Not Even BIOS)

Check power, input, and cable

  1. Monitor on the correct HDMI / DisplayPort input.
  2. Cable seated on the graphics card outputs if you have a dedicated GPU—not the motherboard ports (unless you have no GPU and use CPU graphics).
  3. Try another cable and port; test the monitor on another device if you can.

Hardware basics

If there is never a motherboard logo:

  1. Reseat RAM (one stick in the slot the manual recommends for single-channel test).
  2. Clear CMOS per the board manual.
  3. Listen for beep codes or check POST debug LEDs.

Black Screen After the Windows Logo

Boot Safe Mode and undo the last change

Use enter Safe Mode in Windows 11—from Automatic Repair after three interrupted boots, or Shift + Restart from the sign-in screen if you can reach it.

In Safe Mode:

  1. Settings → Windows Update → Update history → Uninstall updates (remove the latest quality or driver update).
  2. Device Manager → Display adapters → uninstall the GPU driver → reboot.

Cursor on black, PC sounds "alive"

  1. Win + Ctrl + Shift + B to reset the graphics driver.
  2. Ctrl + Alt + Del → sign out, or type your password blind at login if you hear the startup sound.
  3. Once in: disable fast startup (Control Panel → Power Options → Choose what power buttons do → uncheck Turn on fast startup).

Recovery Options

From Automatic Repair → Advanced options:

  1. Startup Repair first.
  2. System Restore if you have a restore point from before the issue.
  3. Reset this PC → keep files: reinstall Windows without losing data.

Laptop Note

If HDMI to a TV works but the built-in panel does not, the lid cable or panel may be bad—software fixes will not help.