Hi, First backup all your data from all your OS's that are crucial then, boot into Window and create a System Repair Disc - just enter System Repair Disc in your Windows 7 Menu (I am assuming you are using 7). Test the repair disc that it works.
Also you may like to download a genuine version of Windows - you must have the CoA (Certificate of Authenticity) somewhere on a sticker on the machine:
http://superuser.com/questions/78761/wh ... -microsoftThen boot with your repair disc and choose the command boot options for repair and enter:
- Code:
bootrec.exe /fixmbr
then
- Code:
bootrec.exe /fixboot
This will restore your Windows MBR (Master Boot Record) - to keep this intact when installing Zorin 9 follow my video tutorial here:
https://vimeo.com/110085401