there could be several reasons if your laptop is not starting when the battery is connected, 

Here are some troubleshooting steps you can follow to identify and potentially resolve the problem:

Check the Battery: Ensure that the battery is properly connected to the laptop. Sometimes, loose connections can cause issues. Try removing and reinserting the battery, making sure it’s securely in place.

Check the Charger: Make sure the charger (power adapter) is working correctly. Plug it into a different outlet and see if it’s delivering power. You can also test it with another compatible laptop to verify if it’s functioning properly.

Inspect the Charging Port: Examine the laptop’s charging port for any damage or debris. Sometimes, a damaged port or dirt inside it can prevent the laptop from charging. Clean the port if necessary, but be careful not to damage it further.

Try a Different Charger: If possible, try a different charger that’s compatible with your laptop to see if the issue is with the charger itself.

Reset the Battery: Some laptops have a reset button on the battery. Press it to reset the battery and see if that helps.

Check for LED Indicators: Many laptops have LED indicators to show the battery status. If these LEDs don’t light up when the laptop is connected to the charger, it may indicate a problem with the laptop’s charging circuit.

Test without the Battery: Remove the battery and try starting the laptop using only the charger. If it starts without the battery, it may be a battery-related issue.

Check for Physical Damage: Look for physical damage to the laptop, such as a cracked screen or other issues that may be preventing it from starting.

BIOS Reset: In some cases, resetting the BIOS settings to default can resolve power-related issues. To do this, consult your laptop’s manual for specific instructions.

Professional Help: If none of the above steps work, it may be a hardware problem or a fault with the laptop’s internal components. In this case, it’s best to contact the manufacturer’s customer support or a professional technician to diagnose and repair the issue.

 

# Remember that laptops can have various hardware configurations, so the exact steps and solutions may vary. It’s important to follow your laptop’s user manual and warranty instructions, and if your laptop is still under warranty, consider reaching out to the manufacturer for support.