- Check power cable to the wall socket is plugged in properly.
- Verify if the power button is not stuck or jammed.
- Press the power button on the computer for 5 to 10 seconds to force a hard shut down.
- Check all cables to the monitor and power are connected correctly.
- Check for any pending Windows updates or upgrades.
- Run chkdsk command to detect and fix any file system issues.
- Verify that the antivirus program is updated and working.
- Check for any new applications recently installed.