Today, when arrived at home and started my Windows XP computer, I found the screen was black during start up. It said no computer input. (I am posting this question with my mobile.) Please help!
The display card is a Sapphire HD4850. There is no red light on the display card, I've clean the dust, and the fans are spinning, so there should not be an overheat problem.
The CPU is okay because I see the fan on it is spinning.
The PSU is normal -- no problem.
By the way, does the motherboard provide an onboard display usually? I found there is another port to plug with my monitor cable, and i tried to use that, but I still get a black screen during start up and onwards. Any clues?
Edit: when i said black screen, it means the monitor is idle waiting for input, saying no input from computer. So black screen, i suppose the windows is okay booting up…just assume.