You are not the first one to do something to windows and confuse grub by changing your boot configuration. To restore things the way they were boot your system with a live linix distro and connect to your network. Type boot repair into your program search. If it doesn’t come up search the internet for Yannubuntu Boot Repair. Print the directions for how to install it. You will have to type a couple of commands at the terminal prompt. Having installed it run Boot Repair to repair your grub. Close down your computer, remove the disk, and reboot as normal. You should see grub listing linix first. Hint for the future: if it a’int broke, don’t fix it.
- P