There could be various reasons why you are seeing a black screen on your laptop. Here are some general troubleshooting steps you can try:
Check if the laptop is actually turned on. Sometimes, laptops go into standby or hibernation mode, which can cause the screen to go black. Try pressing the power button to wake it up.
Check if the laptop's battery is charged. If the battery is dead or low on charge, the laptop may not turn on or the screen may remain black.
Check if the laptop is connected to an external display. If you have connected your laptop to an external display, the black screen might be due to the laptop screen being turned off. Try disconnecting the external display to see if the laptop screen turns back on.
Check if the laptop's display settings are correct. Sometimes, the laptop's display settings may be set to a resolution or refresh rate that the monitor cannot support. Try changing the display settings to see if this fixes the problem.
Check if the laptop's graphics driver is up to date. Outdated or corrupted graphics drivers can cause display issues. Try updating the graphics driver to see if this fixes the problem.
Try booting the laptop in safe mode. Safe mode starts the laptop with minimal drivers and services, which can help diagnose and fix problems. To boot into safe mode, restart your laptop and press the F8 key repeatedly until the Advanced Boot Options menu appears. Select Safe Mode and press Enter.
If none of these steps work, the problem may be hardware-related. In this case, it is recommended to contact the manufacturer or a professional technician for further assistance