Screen stays black but the PC is running – what now?

Possible causes: Loose cable connection, faulty monitor, graphics card issue, or a simple system error. **Steps:** 1) Check that the monitor is turned on and the cable is firmly connected (at both the monitor and the PC). 2) Try a different monitor or port (e.g. HDMI instead of DisplayPort). 3) Press the keyboard shortcut **Windows + Ctrl + Shift + B** to reset the graphics drivers. 4) Restart the PC (if necessary by holding down the power button). 5) If the screen remains black, the graphics card may be faulty – have the PC checked by a professional.