[Please help] phone stuck in bootlap :(

i rooted my phone panasonic p31 15 days ago with root master.
yesterday the positive volume key stopped working so i thought restarting the phone would solve this issue but on rebooting
it showed android recovery menu.
now i have tried every option in that menu. i even wiped all my data. but nothing is working.
one important thing to mention that is my + volume key is not working even in android recovery menu.
please help guys :(