The kali linux booted up as usual but when it comes the time to display the login bar, it is just black and blank, only some short white line be blinking at the top left corner of the screen endlessly! This started to happen after I stopped the upgrades half way in terminal because they were upgrading everything, that was about 0.5 gigabytes of internet data, while i wanted to upgrade specific things like wifite etc. Please help me!