So,a month ago I installed Windows 8.1 and it was working fine until today,yesterday I turned it off and it had some windows update installing so i waited and then went to sleep,today i wake up boot up the computer and the screen is pitch black after the windows 8 logo,when i move the mouse it appears but several seconds later disapears again,the num lock light is turns off and on every time the mouse disapears,i tryed a lot of fixes,sudenly all my restore points disapeared from my computer and i cant do anything,cntrl+alt+del doesnt work,replaced sethc.exe with cmd but it doesnt appear because of the black screen,all boot modes have the same problem.
Thnx for the help in advance