Ok sorted nothing spectacular
Even though the optical drive wasn't in my computer and it wouldn't play disks,
I tried a few things after googling ,i went for the recovery cd that came with the computer,
and for reasons i don't know it worked '
The asus have a recovery disk that is exclusively to them
Insert disk and reboot pressing F9 and it installs giving 3 different options of reinstall i went for the first
skyblue