Welcome to Tom's Hardware, @NYrican88!
What do you mean by the laptop is not recognizing the SSD anymore? I'd recommend you go to the BIOS interface and check if the SSD is listed as the SATA booting device there. Since you have fully formatted it, I assume there's no OS installation on the drive as well. If that is the case, you need your
Windows Installation media with same OS version that was running on the laptop previously and the SSD to reinstall the OS onto it.
It might also be a good idea to
reset BIOS and see if this will help the laptop recognize the SSD properly. However, make sure you re-configure all the needed settings after the reset - set the SATA mode of the SSD to AHCI from the settings and...