When I turn the monitor on I get a message "In

Hello,

the message Analog input in power save mode means that your monitor is not getting a signal from your computer.

Maybe you moved the video cable while reconnecting your keyboard? check both ends of your video cable.

If you have a DVI cable, then your monitor has to be switched to digial input.

I hope this helps.

The monitor has failed, it is almost always cheaper to replace it than fix it.

open control panel choose power options and you can turn it off

Dell monitors automatically go into power-save mode after a preset amount of time when the computer is inactive. The Dell monitor will go completely black, instead of showing a screensaver. This doesn't mean that your Dell computer has shut down. Instead, this allows your monitor to essentially turn off until it's needed again. You can change how long it is before the Dell monitor goes into power-save mode by changing your display settings.

1. Step 1 Press any key on your keyboard or move your mouse. Either will turn off power-save mode. Alternately, you can press the power button on your Dell computer tower or laptop.
   
2. Step 2 Press any key a second time if the monitor goes from power-save to stand-by mode. Stand-by mode allows the screensaver to appear.
   
3. Step 3 Enter your user name and password into the login prompt if your computer requires a login. Press "Enter" to begin using your Dell computer.
   
4. Step 4 Change the display settings on your Dell monitor to prevent your monitor from going into power-save mode prematurely. Right-click anywhere on your desktop and choose "Properties." Click the "Screensaver" tab and press "Power." Beside "Turn off Monitor," choose a time amount from the drop-down list and press "Apply."
   

Good morning! kindly try to review/check the operations manual of your monitor as there might be proper set-up settings / compatibility requirements to a certain PC. best regards

Try tapping the F8 key while booting the computer, you will get the start up menu, choose safe mode, when you log on, go to the display settings, that is right click on the desktop, properties, screen saver, advanced and make sure that hibernation is off, along with turn off disks or whatever , probably see turn off monitor after XX minutes, I make ours 15 minutes (150 computers and servers), I don't let the disks turn off. Choose always on also, not home/office. Try this and see if these settings help.
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If you do not move the mouse or press any key on the keyboard it could be just going into video power save. Confirm it by moving the mouse or pressing a key on the keyboard. If the monitor comes back on, adjust the power settings in control panel and change the time for the "turn off display" to a more suitable setting.

The monitor is not receiving signal from the computer. Is the power light on on the computer? If so - press and hold power button on computer until the power light goes off, then press again to restart. If the computer starts and you still have no picture it is most likely a video card or motherboard problem.

If you did not hear any beep from your CPU, then the problem is in the system not the screen.
Try connecting the screen to another computer and try also a working screen of a friend to your computer...
You'll find out that either the screen or the computer...

Good luck... post me back for your result.
Don't forget to rate too.
Thanks...

Try hitting the space bar on the keyboard. Does the mouse work normally?