So, the problem with installing Kali alongside Windows (Dual-Boot) is that by default Kali runs in Legacy mode unlike Windows runs in UEFI mode. So, for dual-booting Kali below are the steps:
1)Download Kali. (kinda obvious) U will be having an .iso file.
2)Now using Universal USB Installer, get the USB stick bootable having all the folders.
3)Now go to the USB stick folder and open the folder named 'boot'.
4)In that folder theres an .img file named efi.img
5)Right click on that and then Open Archive . (I use 7zip generally)
6)After that u will see a folder named 'EFI' . Just drag and drop it in the root folder of USB stick.
7)Now u are ready to install Kali alongside Windows in UEFI mode.
8)Enjoy KALI :))