First of all, hypothetical questions need to be discouraged. For discussing any point of law forums are available.
Please understand that any person defaulting a loan is committing an offense under civil law and he is liable to his creditor to repay the loan as per the agreement between them.
Coming to your hypothetical events, I just wonder which Bank/Creditor gives a loan to somebody who has no job to repay ("...Now I have a good job..." denotes that you were not having proper job when you took loan) and give a top up too. Its too hypothetical to be true. No bank gives loans merely on the basis of some bank cheques (Post Dated Cheques). There will be collateral and/or personal security or guarantee. Banks have a standardized procedure to go after the defaulter or potential defaulter. Do not be under any impression that one can take a loan and just get away without repaying.