Black screen with cursor

[1337DoesGaming]

Every time I try to boot up my computer it will come up with a black screen with a cursor that I can move. It will not let me get into task manager. I’ve already tried many videos on YouTube and none of them seem to work. I would like to keep all of my files aswell. 

[Lil_Boy_Blue]

Hi

OR

First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat

AND/OR - Power on your PC, press Esc (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).

If in doubt please ask.