Display not waking from sleep could be a driver issue, hardware, malware, etc.

You could try.:

1. Click Start
   Collapse this image Expand this image

   
   , type device in the Start Search box, and then click Device Manager in the Programs list.
2. In the User Account Control dialog box, click Continue.
3. In Device Manager, expand Mice and other pointing devices.
4. Right-click the USB mouse, and then click Properties.
5. Click the Power Management tab.
6. Click to clear the Allow this device to wake the computer check box, and then click OK.

There is no one size fits all answer.

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I guess I should say the mouse normally works to wake it....its not a mouse issue. Please read the message again in it entireity.

Thanks!

I had it go to a blank screen about 15 minutes ago. I've seen it happen a couple times in the past and I've seen a white screen before too. I'm not sure at this point if it's a software or a hardware problem. I have MagicJack installed, so that may be a problem with a stability.

Have you run the Dell diagnostic test to determine if there's any issues?

The system I have is refurbished so I did some additional testing besides the Dell test and haven't been able to reproduce this random problem. I did notice when I received my system that the Windows install they used on my PC wasn't configured correctly. I may re-install the OS later.

bh758,

We are spread very thin. Download and install the newest ATI Mobility Radeon HD5470 / HD4200 driver 8.781. Once loaded, restart the PC and test it.

I have the latest video driver installed.  All of my drivers are the latest version.  Yet the screen sometimes refuses to turn on when I move the mouse or touch the touch screen.  The machine is running, but the screen simply won't turn on in these instances.  I do a hard shutdown (by holding the power button down until the computer shuts down).  Then I start the machine up again and it works fine.  This is quite frustrating.

What happens if you disable all power management except for the display?

Chris M: My power management settings are to turn off the display after 25 minutes and to never put the computer to sleep.  I have messed with having the display turn off at various intervals, but it seems to make no difference with regard to this problem.  I don't like to put my computer into sleep or hibernate mode.  I like the machine to be immediately ready to use when I want to use it.  Besides, I often run applications unattended while I'm not sitting in front of my machine, and I don't want the thing going to sleep in the middle of a process I am running.

When it doesn't wake up, what happens when you press cycle the left side input button back to the video port your using?

Chris M: Thanks for your response.  I had to wait until the display refused to turn on to test this out.  Pushing the input button had no effect whatsoever.  Nothing appeared on the screen.  I ended up doing a hard shutdown again.

Are you using this specific driver?