Getting help and advice from one of the many experts here at Microsoft Community does not cost anything.
Whenever you receive a phone number as an answer and feel uncertain whether it is from someone at Microsoft, don’t take the risk,
confirm the number is for official Microsoft Support.
If you do not have a Windows 7 disk you can borrow a friends as they are not copy
protected. Your System maker will also sell the physical DVD cheap since you already
own Windows. Also you can make a repair disk on another computer.
If you need to make repair disks - these help repair Windows not re-install.