Yesterday my phone started to act like the volume down was stuck and it would just vibrate constantly. After a few battery pulls I was able to get it to stop doing that. This morning the phone froze so I did a battery pull. Now all it does when I power it on is go to a screen with the android guy on it and a triangle above him with a ! mark in it. I can get into bootloader, but can't seem to run a root or unroot. I've never had the phone rooted and just recently did a wipe 2 weeks ago cause it was acting up. Is there any hope to fix this paperweight?