Upgrade to solid state drive

Hi, I'm running into an issue with my diy upgrade. I bought an mSata drive to put into my iPod classic 7th gen. When I installed it and turned the iPod on, the screen lit up but did nothing else. Then I thought, maybe the adapter didn't work so I found a Super Talent 128gb solid state drive and tried that. Same problem. The screen just lights up. The screen is bright if I don't plug it in to the usb cable but if I do, it's dimmer. I've read that when people do this, it usually starts up with a screen that says the iPod needs to be restored with iTunes but I've gotten nothing but a blank lit screen. Can anyone help me figure out what to do? I'm very close to just putting in my old hard drive and abandoning the idea altogether.