I tried installing ubuntu using the instructions here: answer with 32 votes. unfortunately, it didn't work out well for my windows 10. I might be a bit naive but I blindly followed the instructions provided in the pictures, i.e. on unetbootin, I chose hard drive and C:\ and didn't specify anything else other than what was indicated in the instructions.
When I rebooted, I didn't get a menu asking me which operating system to choose, whether it's windows 10 or unetbootin. Even pressing F12 did not help.
So I am giving up for now and I will just wait until I can find a USB. My only problem now is that my drive C:\ is called "Install Ubuntu (C:)" with the Ubuntu icon. I am wondering if there's anyway I can revert it back to what it originally was which is simply Drive C:.
Thanks a lot for your help!
(I basically have the same problem as this person but no solution was given.)