How to uninstall/abort Kali Linux Installation

Hello everyone,

I started the process of installing a partition of kali linux on my windows 7 build, but I no longer require it/lost my installation usb so now I a still prompted at every bootup to either load my native windows 7 os or to continue with the kali linux installation. I have not continued at all with any part of the installation after this point. However now my computer hangs on a black screen of death before login and after loading windows, which I think either has to do with my video drivers or my failed attempt of partitioning kali linux.

Either way, I am looking for a way to revert the installation or abort/uninstall the current progress I had made on my hard drive.

How would I go about doing that?

Thanks