hi... when i installing windows 7 it ask for hard disk driver
You may want to check with the computer manufacturer to ensure that there aren’t any hard drive controller drivers that are necessary to install Windows 7. Some manufacturers require a separate controller driver to be loaded in order to install Windows 7.
Also, you may find the Microsoft Knowledge Base article You cannot select or format a hard disk partition when you try to install Windows Vista, Windows 7 or Windows Server 2008 R2
Windows Outreach Team – IT Pro