Re: How can I backup my files to restore Windows
If the following is true:
1) You actually installed Ubuntu to its own separate partition -- NOT a Wubi install
2) Ubuntu boots and works just fine
Then ... you can use Clonezilla to back off the Ubuntu partition to an image file on an external drive. You will need a Clonezilla LiveCD to do this as it can not back off the partition it's using.
You can use the same LiveCD and Clonezilla image to restore that partition later -- after you have reinstalled Win7.
Ubuntu 14.04, Mint 17; MS Win 8.1.
Will not respond to PM requests for support -- use the forums.