lock drive

hello

how to lock and protect my drive in my laptop from accessing by any other ppl who using my laptop?

Put a password in the bios as well as in the OS on all user accounts that are present.

If you allow others to use the laptop, make sure they can only use a guest account with limited rights.

any simple way to protect it?

any software for it?

What I told is the simple way.

Software ?
Sure, the OS (Windows).

@Krypton
Use Google searches!
Here’s just one: http://www.pcworld.com/article/158292/Enable_BIOS_Passwords_for_Extra_Security.html