This is the second time that I've been having this problem.  I'll be using the computer and then all of a sudden the monitor turns off.  The power button turns yellow like it is on Standby mode.  The last time I had this problem I just shut down my computer and monitor down and left them both off for 6-7 hours and then turned everything back on and it was working fine.  Now it's happened again and I'm wondering if there is a better way to fix it.  If I turn the monitor off and turn the computer off and then turn the computer on first and then the monitor I see the Windows loading screen but then the monitor looks like it's going into standby mode right away again.  I always leave my computer on and my monitor and all of the air intake vents are dust-free.