Hello! I'd be happy to help you with your laptop issue.
When you replaced the old SSD with a new one and you are seeing the message "NO BOOTABLE DEVICE," there are a few things you can try to fix this issue:
1. Check BIOS/UEFI settings: Make sure that your new SSD is detected in the BIOS/UEFI settings. Restart your laptop and enter the BIOS/UEFI by pressing the designated key (usually Del, F2, F10, or Esc) during the startup process. Look for the boot order settings and ensure that the new SSD is selected as a boot device.
2. Reinstall the operating system: If the new SSD is not detected or properly initialized, you may need to reinstall the operating system. You can create a bootable USB drive with your OS installation files and follow the on-screen instructions to reinstall the OS on the new SSD.
3. Check the SSD connections: Ensure that the new SSD is properly connected to the laptop. Open up your laptop and double-check that the SSD is securely plugged into the SATA port or M.2 slot, depending on the type of SSD.
4. Update SSD firmware: If the SSD is detected but still not booting, you may need to update its firmware. Check the manufacturer's website for instructions on how to update the SSD firmware.
5. Data migration: If you have data on the old SSD that you need to transfer to the new one, you can use data migration software like EaseUS Todo Backup or Samsung Data Migration tool to clone the old SSD to the new one.
If you have tried these steps and are still facing issues, please provide more details about your laptop model, the new SSD you installed, and any specific error messages you encountered. This will help in troubleshooting the problem more effectively.