Whenever I put my computer to sleep and awake it I am always greeted with a black screen. The comp is on and fans are running but its just black. If i turn the monitor on,off, and on again, I will get no a no signal display and the screen stays black. The only I can do is a restart or put the computer to sleep again using my keyboard and awaking it again (this method may take 4-5 tries of sleep/awake, sleep/awake, etc until it finally works as normal).