im taking a Law class now. dont get a lawyer for $2500. If it was a gift to you, you don't have to pay him back. He can sue you for whatever he wants, but the judge will make you pay what the price of the computer was. If he sues you, take it to an Arbitration. Its like people's court. A qualified judge(arbitrator) will determine the outcome of a suit. In all seriousness, you dont need a lawyer