Black screen whith mouse cursor blinking

Hello,
i had black screen whith mouses cursor blinking and i try everything to do but nothing would help i try f8 f9 f10 f11 f12 nothing only f4 and enter in to a flash type generic flash type said and esc that only go to bios command y try the antyviurse and nothing would help so any awser to help whith this problem and the restor disk that burn off the computer would not work any answer that would resolved the problem thank you