Blank screen, no light or charging screen

I know this device is like almost 10 years old, but I recently bought one from eBay to mess around with and I flashed a rom, and trying to go back to stock, I flashed a zip bit it was for sprint, and so I needed up wiping my whole system. I went to reboot into bootloader to run the ruu, and just a blank screen. nothing else. for a brief moment i saw the charging screen, but now it gets warm but it’s just black. I’ve tried holding the buttons, didn’t work. Any fix?
update - it hard bricked