Roxas said:
How do you reformat the PC??
It depends for what purpose you want to Format Disk.
In general, you can find help going to Start > Help and Support
you'll find handy instructions such as these one:
.............
Formatting disks and drives
Hard disks, which are the primary storage devices on your computer, need to
be formatted before you can use them. Formatting a disk means configuring
the disk with a file system so that Windows can store information on the
disk. Hard disks in new computers running Windows are already formatted. If
you purchase an additional hard disk to expand the storage of your computer,
you might need to format it.
Other types of storage devices, including many USB flash drives and flash
memory cards, might come preformatted by the manufacturer. CDs and DVDs use
formats that are different from hard disks and removable storage devices.
For information about formatting CDs and DVDs, see Which CD or DVD format
should I use?
Warning
Formatting erases any existing files on a hard disk. If you format a hard
disk that has files on it, the files will be deleted.
Here are answers to some common questions about formatting disks and drives.
............
But if you want to uninstall Vista and install say, Win XP or again to
install
Vista from fresh & clean installation - JUST insert the CD with OS Vista
and reboot the PC and follow the instructions and the Win XP or Vista
will do it for you.
You should know the basic though of fresh installations.
Try
www.google.com writing required search and select
from the menu what ever you need.
For example; "how to format hard drive windows xp"
You'll get from Google this link and follow it :
http://tinyurl.com/3a36qx
or
http://support.microsoft.com/default.aspx/kb/313348