Error when installing windows 10?

Error when installing windows 10?

Added (1). I got windows 10 education from dreamspark through my school and put it onto a bootable usb (I've done this before with windows 8). I run the setup in the flash drive and it starts to install but after restarting it goes to a black screen with no cursor. I tried shutting it down manually and it comes back on in windows 7 saying error, couldnt install windows 10. Am I doing something wrong or does someone know how to fix this? I have a lenovo e455 thinkpad with windows 7 if that helps

Keep using your old Windows or backup everything that needs to be saved and perform a clean installation of Windows 10 instead.

What kind of error?

We can't help if you don't specify your problem. There can literally be 1000 different errors during installation.
Could you tell me:
-When during the installation this error occurred?
-If you got an error message? (And if so what it said)

Maybe I can help!