Monitor no waking up

click the mouse, move it about or press a key , if that doesn't wake the pc up, then press the power button for 1 sec, that will wake it up

If your trying to wake your computer/monitor up try pressing a button on your keyboard or move your mouse. This should wake up both your monitor and computer.

How can I wake my computer from sleep or hibernation?

On most computers, you can resume working by pressing your computer's power button. However, not all computers are the same. You might be able to wake your computer by pressing any key on the keyboard, clicking a mouse button, or opening the lid on a laptop. Check the documentation that came with your computer or go to the manufacturer's website.

Try updating all the drivers. Mainly the chipset and the video card drivers. If you have a wireless card, update it too.
Also make sure that the onboard video card is disabled in the setup-

Hi there,

I want you to try something next time this happens, instead of rebooting the computer, just cut power to the monitor. Then switch it back on.

Does the screen come back up?

Comment back and let me know

Mike

check power options in control panel and BIOS.

Hold down the power button for about 6 seconds continuously, this should wake it.

It is probable that the ROM system, called BIOS (Basic Input/Output System), is set to not wake your computer by moving the mouse or pressing a key on the keyboard.

I do not know which BIOS your computer is running so I can only give a general answer.

When your machine is starting up, look for a message that says "Press F2 to enter BIOS" or something like that. Your machine may have a different F key assigned to enter BIOS.

There should be a setting in there that allows you to change the values for waking the monitor. It should say something like "Use keyboard and Mouse to wake up computer", it won't say those exact words, but something like that. If the value is set to disabled, then enable it. Then save your changes and exit (Usually by pressing F10)

Be careful when in BIOS. Changing settings you do not understand can make your computer behave erratically or stop functioning altogether.

Hit the keyboard keys. It is better to just turn sleep and hibernate off and just use a screen saver or tun it off.

Ok sounds to me like a power supply problem.. this a a fairly common symptom. I suggest that as a temporary fix you set the monitor to NOT turn the power off to the monitor in sleep mode if possible, in your power settings for the monitor.