Hi there.I have asrock z77 pro4-m and intel i3 3225 with Intel HD 4000.Monitor samsung syncmaster e2220n is connected via vga port on the onboard graphic card.Probelm is that monitor wong go in sleep mode after shut down,it shows "no signal input".it is the same if i leave it for a few minutes.windows command "turn display after..." also it shows the same.interesting is that the same monitor connected on diferent computer works perfectly.So what you think is the problem.Thanx in advance
After you shutdown the system the monitor should go to sleep or stand by mode and this is managed by the motherboard itself not by the video controller driver.
You might need to try updating the BIOS of your Asrock motherboard and check with another video monitor and check with Asrock if the issue persists.
For BIOS updates you can refer to:
For support you can use: