Hi there! I'm sorry to hear that your SHAREit PC software is crashing shortly after you open it. That can be really frustrating. Let's work together to get this sorted out.

To start, could you tell me a bit more about when exactly it crashes? For example, do you see any error messages, or does it just close suddenly? Also, when did this issue begin? Did it start happening after a specific update or change to your system?

While I wait for your response, here are a few common troubleshooting steps we can try:

1. Run the Windows App Troubleshooter: This tool can help identify and fix issues with your applications. To do this:
- Press Windows Key + X to open the Quick Access menu.
- Click on Settings.
- Go to Update & Security.
- Click on Troubleshoot from the left pane, and then select Additional troubleshooters.
- Choose Windows Store Apps and follow the prompts.

2. Check for Updates: Ensure your SHAREit application is updated to the latest version. Sometimes, updates fix stability issues.

3. Reinstall SHAREit: If the above steps don’t work, try uninstalling and then reinstalling the software. This can fix corrupted files that might be causing the crash.

Once you provide more details, we can narrow down the issue further if needed! Looking forward to your response.