can we uninstall win7 easily !

Just run the setup disk and select format on the selected hard drive and then reinstall in that same hard drive that you formatted.

 

yes by reformatting it

 

yes Windows 7 comes with a built-in uninstall command, but you have to use Windows PE.

You load up PE or your windows 7 disk and then press shift-f10 for command prompt, then type in the command prompt:

diskpart
select disk # (0-9)
for every disk 0-9 run this command:
clean

so disk 0 would be diskpart --> select disk 0 ---> clean

that is it, now just do it for the rest of the disks on your computer and Windows 7 will be uninstalled and you will have a clean box to reinstall Windows on.

 

understatement of the year award. Using this method *everything* will be gone.

 

Just enter again in a bootable installer DVD, select customize, delete all the existing HDD, then install it again on the HDD.
unless there is some HDD partition, just delete the partition that will be installed.