Hello
Thank you for posting in Microsoft Community forum.
Based on the information you provided, it seems that the Windows setup is not detecting the new drive you installed. Here are some steps you can try to resolve the issue:
- Check if the drive is properly connected to the laptop. Make sure that the M.2 adapter is securely attached to the motherboard.
- Check if the drive is compatible with your laptop. Verify if the HP EX900 Plus 512GB NVMe PCIe M.2 is compatible with your laptop's specifications.
- Check if the drive is enabled in the BIOS. Go to the BIOS settings and check if the drive is enabled in the storage configuration.
- Try changing the boot order in the BIOS. Set the boot order to prioritize the drive where you want to install Windows.
- Try using a different Windows installation media. The issue may be caused by a corrupted installation media.
If none of these steps work, you may need to seek assistance from a professional technician or contact the manufacturer for further support.
I hope this helps! Let me know if you have any other questions.
Best Regards,
Zack Lu