1. Insert the SSD directly on the motherboard, instead of connecting it externally or using a USB hub.
2. If you have mounted the SSD on the motherboard, check the SATA and power cables.
3. Try connecting other devices and ports to check if the SSD is recognized.
4. Update BIOS and drivers to the latest versions.
5. Create and format a new partition.
6. If the SSD is still not recognized after these actions, request a product return.