Thread: PC hangs on black screen after install Win7

I installed windows 7 before few months. Windows running is very well but recently I have problem is the system will go into hibernate and when I go to bring it back up, the computer comes back online but the screen will stay black and the mouse does not light up, the keyboard does. It will then take me about 2-3 restarts to get it back and going. After I do the initial restart, it'll make it to the windows loading logo and halfway through will then go to the black screen. After I do the initial restart, it'll make it to the windows loading logo and halfway through will then go to the black screen. Please help me to solve this problem.

Black screen and no USB power sounds like a PSU issue. Your power contribute is not supply enough authority to your video card and USB ports.