Formatting of Hp laptop

A. Turn on your computer so that Windows starts normally, insert the Windows 7 installation disc or USB flash drive, and then shut down your computer.
B. Restart your computer.
C. Press any key when prompted like F2, F10, depending on the HP laptop model , and then follow the instructions that appear.
D. On the "Install Windows" page, enter your language and other preferences, and then click Next.
E. If the "Install Windows" page doesn't appear, and you're not asked to press any key, you might need to change some system settings. To learn how to do this, see Start your computer from a Windows 7 installation disc or USB flash drive.
G. On the "Please read the license terms" page, if you accept the license terms, click I accept the license terms, and then click Next.
H. On the "Which type of installation do you want?" page, click Custom.
I. On the "Where do you want to install Windows?" page, click Drive options (advanced).
Click the partition that you want to format and click Format.

1. If you have more than one partition on this hard drive and want to get rid them to make one big drive again, then select a partition and click on the Delete option for each partition.
2. Once you have deleted all of the partitions, select the Unallocated Space partition and click Format.
3. Pick the formatting option that you want.
4. When you've finished formatting, click Next.

J. Follow the instructions to finish installing Windows 7, which include naming your computer and setting up an initial user account.
H. If you do not want to reinstall Windows 7, you can cancel the installation at this point and keep your newly formatted drives.