
This indicates that one of the hardware components you removed is preventing your PC from properly turning on. Since only the most essential hardware was installed when your computer turned on, those components must function correctly. Disconnecting and reconnecting the video cable and shaking the mouse can also help to wake up the display. In this case, you should double-check the physical connection, ensuring that both ends of the video signal cable are correctly connected in the correct in and out ports.

You can also try connecting the monitor to a different computer or use a different video signal cable to conclude whether you are dealing with a broken display, graphics card, or damaged cable.

Then continue with the steps below to boot the device in safe mode.
