New SSD Installed in Laptop, Replacing CD Disk Drive, but Caddy Case HDD Not Detected After a Few Days.

There could be a few different reasons why your HDD in the caddy case is not being detected after you installed a new SSD in your laptop. Here are some troubleshooting steps you can try:

• Check the connection:

Make sure that the HDD in the caddy case is securely connected to your laptop. You can try unplugging it and plugging it back in to ensure it is properly seated.

• Check the power supply:

Make sure that the caddy case is getting power. If the power supply is faulty, it could cause the HDD to not be detected.

• Check the BIOS settings:

Your laptop's BIOS settings may need to be adjusted in order to recognize the HDD in the caddy case. Go into your BIOS settings and make sure that the SATA port the caddy case is connected to is enabled.

• Check the device manager:

Open up the Device Manager in Windows and see if the HDD is listed under the Disk drives section. If it is not, you may need to install the drivers for the HDD.

• Test the HDD:

If none of the above steps work, you may need to test the HDD to see if it is functioning properly. You can try connecting it to another computer to see if it is detected, or you can use diagnostic software to test it.

If none of these steps work, it is possible that there is a hardware issue with either the HDD or the caddy case. In that case, you may need to take it to a professional for further diagnosis and repair.