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black screen & peripherals not turning on

shihab hossain 0 Reputation points
2026-05-17T20:49:34.81+00:00

i recently built my first ever gaming pc, i tried to install windows with a usb stick but i went afk when windows asked me to connect to the wifi, when i came back my pc was still running but the screen was off i tried to move my mouse around and press keys on the keyboard but nothing worked so i restarted the pc but now i have a black screen and my peripherals wont light up or work what do i do?

Windows for home | Windows 11 | Performance and system failures
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  1. John DeV 164K Reputation points Independent Advisor
    2026-05-17T21:35:46.44+00:00

    Hi, good day!

    Have you tried the AI suggested solutions?

    If the issue persists, please try performing a Clean Installation of Windows again using the USB flash drive and this time complete Windows Initial Setup.

    I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Do keep me informed by clicking "Add comment" below instead of Yes or No button.

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  2. AI answer

    2026-05-17T20:49:49.0066667+00:00

    Follow these steps in order, testing after each step:

    1. Check power and cables
    • Make sure the PC is powered on and fans are spinning.
    • Verify the monitor is plugged into power, turned on, and set to the correct input (HDMI/DisplayPort).
    • Ensure the display cable is connected to the graphics card output, not the motherboard port (if a separate GPU is installed).
    • Reseat the display cable at both ends or try a different cable/port.
    1. Try basic blank‑screen recovery
    • With the PC on, press Windows + Ctrl + Shift + B once to reset the graphics driver. Listen for a beep or screen flicker.
    • Press Windows + P, then tap P once and press Enter to cycle display modes in case Windows is outputting to a non‑existent display.
    1. Check keyboard and mouse
    • Unplug the keyboard and mouse USB cables, wait ~10 seconds, then plug them back in.
    • Try different USB ports on the PC (prefer rear I/O ports directly on the motherboard).
    • If using a USB hub, bypass it and connect devices directly to the PC.
    • If wireless, press any reset button on the device or receiver, or re‑seat the USB receiver.
    1. Power cycle the PC
    • Hold the PC’s power button for about 20 seconds to force it off.
    • Turn off the power supply (if desktop) and unplug the power cable for 30 seconds.
    • Plug back in, power on, and see if the keyboard/mouse lights and display return.
    1. If the screen is still black
    • Try another monitor or TV if available.
    • Disconnect all non‑essential peripherals (USB drives, extra controllers, etc.), leaving only keyboard, mouse, and monitor.

    If none of the above restores display or peripheral power, there may be a hardware or cabling issue in the new build (GPU not fully seated, power connectors, or motherboard/PSU). In that case, recheck internal connections or seek in‑person hardware assistance.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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