I'm not from India, so I don't have any good leads.
But I do have experience both in job search and in hiring.
I think you know what you want to do for a living and thats a good start.
Have you identified all the large employers in you area? At least the ones that have a large office staff. They are the most likely companies to have laptop users. Do you know anyone who works there? Ask them if they have someone internally fix their laptops , or whether they use an outside company. From there, you apply to whoever does the work.
Job hunting isn't easy. You have to use your network of friends and family to find out who is hiring. You have to build a good resume. You have to loook in more than just the usual places.
One way in many companies is to look for contract work. That gets your name out there the more companies you work at, the larger your network grows.
Good luck.