It’s possible that your laptop restarting when opening multiple apps could be caused by either a RAM issue or overheating. Here’s how you can try to narrow down the cause:

1. RAM Issue: If your laptop only has 8GB of RAM, opening multiple apps can sometimes exceed the available memory capacity, causing the system to crash or restart. To check if this is the issue, you can monitor your RAM usage when opening apps. If it consistently maxes out, adding more RAM may help alleviate the problem.

2. Overheating: Overheating can also trigger unexpected restarts. Ensure that your laptop’s cooling system is functioning properly, and check if the vents are clear of dust and debris to allow for proper airflow. You can also use software tools to monitor your laptop’s temperature during heavy usage to see if overheating is the culprit.

Try monitoring both your RAM usage and temperature levels to pinpoint the root cause of the restarts. If the issue persists or worsens, it may be worth considering professional assistance to diagnose and resolve the problem effectively.