Can I get a good new laptop for ₹12,000?

The budget you have in mind is not enough for any new laptops. Instead, you should go for either a refurbished laptop or a rental laptop. I would suggest you go for rental laptops, as that way, you would be able to get a better device for a nominal monthly fee and would also be able to avail the official customer support. For example, you can check out HP’s Lease with ease website, which is a well-known platform for renting new & unused laptops.
If you want to learn more about laptops and desktop PCs, read more blogs on the Tech4Growth section on DQIndia’s website or the NextGenIT on CiOL’s website.