So this is my friend pc that he let me check to fix it, i tried every single thing that i thought can boot it up but none of them work. I tried change the ram that i have layiong around, i tried swab the gpu with mine, even the case because the first time he gave me the pc it wont turn on. Even after all that, it still wont boot up. The did turn on, the fan spinning, but no picture show up and it wont go to the bios, it just blank black screen. i havent try to update the bios tho, is it worth to try updating the bios?