Droid1 touch issues

[geezy3]

i recently dropped my phone an screen went out. took it to verizon but they gave me some bs excuse as to y they couldn't help me. so i got a doner phone an the touch was working just fine. i switched mother boards for mine since its the one on the account. i put it all back together an powered it on an the touch doesn't work now. any ideas ast to y or how to fix.

thanks for any help i recieve