Arduino uno r3 not working after it heated up due to faulty connection

it heated up so much due to a faulty connection with HC 05 bluetooth module. Now it is not being recognised by my pc All LEDs stays on when i power up the arduino

any solutions?

Buy a new one ?

Swap out the AVR chip ?

Take more care in your connections ?

can it be solved jst by replacing the Atmega 328 p?

Short answer in "Nobody knows"

It could be as simple as that PROVIDED nothing else was damaged. If anything else was pooched then you could have quite a bit of work on your hands and thats up to you to decide.