If the drive is not spinning up, then the USB-SATA bridge board may be faulty.
If you have overvolted the drive with the wrong adapter, then the drive itself will probably have a shorted 12V TVS diode, which is usually an easy, no-cost DIY fix.
Before you can do anything, you would need to at least remove the drive from its enclosure.
I can show you where to look for damaged components if you can upload good quality photos of the PCBs.