Which number is the key on the back of Lenovo Y48 notebook?

hello, Y48' s product password is a sticker with the Mircrosoft trademark on the back, and the Product Key is the product key.

if your computer comes with a system recovery CD, you can recover your system through the system recovery CD.

provide you with a method to install win7 system:

/Lenovo/WSI/Inc/kbinfodetail.aspx? Id=38423

provides you with a driver download link:

/Lenovo/WSI/modules/drive.aspx

You can also restore the system by one-click restore function.

you can check the usage method of one-click recovery through the following link:

/Lenovo/WSI/HTMLS/detail _ 131347964623.html

Before reinstalling the system, it is recommended that you back up the important contents in your computer.