I don't have drivers in my laptop

Drivers are special bits of software that tell your computer how to use the hardware attached to it. Most operating systems have basic drivers already built in, but you might have to find specific drivers if your hardware is not functioning as it should.
You can usually find the drivers you need by entering your operating system and the hardware into a search engine. For example: Windows 7 HP Color LaserJet 2500 drivers -or- Linux HP 2400 Printer Scanner drivers.
You can also search the hardware drivers first, then choose your operating system, as in, search HP Color LaserJet 2500 drivers, then go to that page and enter your operating system.
This is, of course, a very general answer to a very general question. If you could give more specific details about your question, someone may be able to provide more specific help.