Screen wont turn on after fastboot

So I broke my phone real good.

Long story short I was following a tutorial on how to fix a softbrick and must have sent a poor command to the phone. The screen was working fine and then I typed fastboot reboot.

Now the screen will no longer turn on. My computer makes a sound like the phone is turning on but I'm not able to send any fastboot or adb commands to it.

Any ideas?