So at boot you get a blinking cursor on black screen often followed by
A disk read error occurred Press Ctrl-Alt-Del to restart.
Internet is full of solutions, this article gives like 10 of them, but they seem to be fucking useless if you ended up watching this video. There is a solution. Take a closer look where Windows is starting from. If this is an MBR disk, and a logical partition is set as boot, this wont work. Windows can only boot from primary partition. Repartition your drive accordingly, and it should work.