Having difficulty reformatting 'C' Drive. Been advised to reformat with OS CD in CD Drive. So have gone to My Computer, right click 'C' Drive, click 'Format', Window pops up saying 'unable to format' - no reason, no help suggestion!
You can not format the disk containing windows from the same disk you are trying to format. In other words, windows can not format the disk windows is on. Think about it, if you are erasing windows it cannot format and erase its self at the same time. You need to use a utility from a bootable cd or floppy to do your format. That way windows is not running and the disk can be formatted.