It sounds like your Shift key may be malfunctioning or there could be an issue with your keyboard layout settings. Here are a few steps you can take to troubleshoot the problem:
- Check Keyboard Layout: Ensure that the keyboard layout is set correctly for your region. You can do this by going to Settings > Time & Language > Language > Keyboard.
- Test the Shift Key: Try using an external keyboard to see if the issue persists. If the external keyboard works fine, the problem may be with your laptop's keyboard.
- Update Drivers: Make sure your keyboard drivers are up to date. You can check for updates in Device Manager.
- Check for Sticky Keys: Sometimes, accessibility features like Sticky Keys can cause unexpected behavior. Check if Sticky Keys is enabled by going to Settings > Ease of Access > Keyboard.
- Keyboard Troubleshooter: Use the built-in keyboard troubleshooter in Windows. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Keyboard.
If none of these steps resolve the issue, it may be a hardware problem, and you might need to contact Lenovo support for further assistance.