Hello everyone, I installed ubuntu on my laptop ,and in the process, it asked me if I wanted to keep the windows 7 operating system or delete it and all the data I had on there. Unfortunately, I had to delete it because it oddly didn’t give me the option to keep windows 7 even though that’s what it was asking. Long story short, I messed up the booting code for ubuntu and now it won’t boot up. I just want windows 7 back. I know I can redownload the windows 7 OS onto a flash drive and boot it, but won’t it ask me for the activation key? What do I do then? Also, is it possible to get all my data back after I do?