humkaris

Q: macbook 4.1 has a black screen at start up and no booting sounds

after 6 months of storage due to keyboard flex issues,  my macbook 4.1 running exclusively on windows 7( not via bootcamp)  would start to a black screen with no booting chime.  the screen would have a faint blink,  the camera would check (green light)  and the LED light at the front  would light white and the fan rotates but just for a few seconds.  i figured it could be heat problems so i changed the thermal paste and the problem of shutting fown on its self after 5 seconds stopped but the black screen and no booting chime problems persisted.  the computer still checks the camera,  screen blicks faintly on startup as if doing a startup hardware check,  the fan rotates and the LED light is on but no booting and screen is black. what could be the problem,  please assist.  I have tried resseting PRAM,  CMC and even changing the CMOS.  i really need assistance. 

MacBook, Windows 7, macbook 4.1

Posted on May 15, 2016 1:19 AM