No as long as you don't need anything from Ubuntu installation then you are free to delete it.
However if you have convert your Windows 7 license to 10, you might have problems activating it again, since Windows 10 license is tied to a machine and is not free floating anymore.
Quote:
Originally Posted by nigguh_frost69 windows 7. theres was 2 options for it to update. one on its own other was to personal install. cause i think my laptop is encripted with linux ubutu from free geek. so does that mean i can't put windows 7 on it? |