I upgraded my RAM and Fan last night and I woke up to play a game and found my screen is black when I start and the screen I tried to see if it was my monitor so I tried on my second and it didn't work. Also when I start my backlit keyboard flashes and turns of and my mouse stays on. I also reset my BIOS but the problem still stands. Thanks in advance.
My educated guess the issue occurred when you replaced the fan. A short would have been created either with the connection or with static. I could also be some kind of flea power, (residual stagnant power) to which only a qualified technician can look into.