How do I fix a laptop that keeps restarting automatically?

1. Check if the RAM is properly installed in the motherboard’s RAM slots
2. Check if the fan is working and the laptop is not overheating.
3. Run some tests to make sure it is not a software issue
4. Check your device's battery and make sure it is healthy and not too low
5. Check if the power adapter is in working condition
6. Make sure all cables and connections are firmly in place
7. Check if the hard drive is connected securely
8. Check for motherboard issues