Not returning company laptop since salary is not made and company to talk about that

Thank you all for providing suggestions.
I already made a request to the company through email regarding the amount for no. Of working days and informed them, at once when they paid me I will return laptop without fail and included that if I failed they can take any legal actions.since I mailed them 4 days before still there is no reply from them. Still I don't know what to do.

Dear Young-man-at-a-loss:
What is not yours, is not yours. I am referring to the laptop. Whether an agreement is arrived at or not, it must be returned.
As far as the outstanding payment(s) is/are concerned, there are many issues to be looked into: did you during your employment stint have the company's cover for the days you were off - and what amount receivable actually accrues for you. Since you don't appear to have a written official contract, you will need have some legal intervention, to receive the payment.
You are walking a tight-rope, and since its your professional career in infancy DON'T DO ANYTHING CONTRARY TO LAW. Seek legal advice; if you don't the employer may lodge an FIR against you, and that would breed ill, on your future CV's and prospective employers.
Rationalize the situation, and prove you go by the highest standards of ethics in all situations, a trait often needed in professional institutions.
The silver lining, from the issues you created for yourself, is the lesson you learn from it.
Have a positive attitude towards the entire scenario, and see how the attitude will help you wade through similar storms in the future.
Regards
Arif ur Rehman