If nothing appears on the screen, the monitor cable may be leaking. No power cord. This may be due to setting the Brightness setting to a minimum. Otherwise, the monitor may be broken. If you smell something burning, If you hear any beeping, just note that the monitor is off. Turn off the light immediately. Monitors are a type of spontaneous combustion. Damaged graphics drivers can also cause PC problems. Install the VGA driver that came with Windows to check if the Graphics Driver is corrupted.
If the problem persists, the original driver of the monitor, Or install an updated version. Some graphics cards may not work with other hardware devices. Windows allows you to disable the Graphics Acceleration function. Open Display Properties and Settings. Advanced. Troubleshooting (XP and 2000), or Settings. Advanced. Click Performance (98 and Me).