Will Lenovo Replace my laptop?

I had my laptop for three weeks now, and when I'm on it it just shuts off at random. No warning just shuts off. I just took it out of the box maybe a week ago and i don't have to much on there so don't think its any virus or anything. It must be a hardware issue.

Will they replace my laptop if i call them up? I don't have a warranty but willing to pay fire a new replacement unit and shipping. Also do they send me the laptop then can i just send it back in the shipping box or do i have to go out and but one Abe ship it to then first?

Go to authorize service center they will check the problem and replace within a week, depend upon the problem