I'm trying to install a larger monitor on the notebook. When I turn the power to the monitor on, a 'NO INPUT SIGNAL' message is displayed. When I hooked the monitor up to a desktop it worked fine. So I know the monitor and cables are OK. The notebook is MSI Wind Atom N270. The Operation System is Windows XP. I have tried looking at display settings, but so far no luck in resolving the issue.

I do not know how many Thinkvision models are out there, but here is a site that offers manuals you can read online or download.
This is just a page from the manual I found. Here is a link to the manual I found. http://www.manualslib.com/manual/91948/Lenovo-Thinkvision-E54.html#manual
THIS MONITOR WILL APPEAR TO BE NON-FUNCTIONAL IF
THERE IS NO VIDEO INPUT SIGNAL. IN ORDER FOR THIS
MONITOR TO OPERATE PROPERLY, THERE MUST BE A VIDEO
INPUT SIGNAL.
This feature is designed to conserve electrical energy by reducing power
consumption when there is no video input signal present.when there is no
video input signal present.When there is no video input signal, this monitor,
following a time-out period,will automatically switch to an OFF mode. And the
LED will turn orange. This reduces the monitor's internal power supply
consumption. After the video input signal is restored, full power is restored
and the display is automatically redrawn. The appearance is similar to a
"Screen Saver" feature except the display is completely off. The display is
restored by pressing a key on the keyboard, or clicking the mouse. Lenovo ThinkVision E54 User Manual

Hello
The video signal is not getting into your display.
Check the connections on both sides of your cable (display side and display card side). If that didn't help, switch off your PC, make sure youre display card is in its correct place (try taking it out and putting it back again). Switch on your PC and check again. If the problem continues, try replacing your display card.

Can you observe any LED lights on the monitor panel when you try to turn it on. If no then check your power cables. If you can see the LED lights but screen does not show try to unplug the VGA/HDMI cable and clean it by blowing air through the plug and then reconnect it. Also try to turn on the monitor without connecting it to the monitor as this will verify if the monitor is OK because if it is it should display a message to check the input signal or no input signal is detected. If it does and you are still not having a display then the problem is probably in your CPU and more specifically in the VGA card.

Acer produces a number of LCD computer monitors. Acer's monitors range from 17 inches to 27 inches. Some monitors offer wide-screen viewing, embedded speakers, high-definition visuals, and various display connection ports. Acer computer monitor problems include common issues such as dead pixels, error messages, and blank screens caused by incorrect connections. Some reviewers have also detected image problems with DVD playback on some models.

"Input Not Supported" Error Message Acer computer monitors such as the G24 may issue an "Input Not Supported" error message when users set the display resolution too high. The G24's maximum display resolution is 1920x1200 with a 60Hz refresh rate. Maximum resolutions vary according to the specific monitor model and according to the capabilities of the computer's video card. b> "Input Out of Range" b> Some Acer computer monitors may report an "Input Out of Range" error message due to incorrectly set monitor refresh rates. Much like the display resolution, each monitor also has specific monitor refresh rates with which it is compatible. Blank Screen or "No Signal" Error b> Like other monitors, Acer computer monitors feature color-coded power indicator lights. If the power indicator light shows green, the contrast or brightness levels may be set too low and should be adjusted via the OnScreen Display. If this does not rid the monitor of a black screen, the monitor may be experiencing hardware failure. The "No Signal" or "Check Cable message" may indicate a problem with the monitor's cable connection with the video card. This error may also appear on a blank screen backdrop if the monitor is plugged into the incorrect port on the computer or if the computer is frozen and needs to be rebooted. Faulty power cords or outlets may cause the screen to be black and to show no power indicator color. b> Image Issues b> Some review sites such as CNET have reported problems with streaking and ghosting during DVD playback on some Acer computer monitors such as the AL1931. (A "ghost" is an identical offset image as the primary or desired image.) Unstable or unclear image issues may be caused by incorrectly programmed VGA timings or incorrectly installed monitor drivers. b> Dead Pixels b> Dead pixels and sub-pixels can cause a variety of display enjoyment problems. Acer will only accept returns on LCD computer monitors that have "more than four (4) defective pixels per million pixels." Further, the central area of the monitor may have no more than one defective pixel. Acer does not differentiate in warranty terms between pixels and sub-pixels. Hope this helps.

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.

Display Power management is being triggered because no input signal was detected. Verify that the video source is connected and on. (Computer, notebook, etc).
- Try another computer or laptop that you know is working properly.
- Do you see any change on the screen if the display cord is completely disconnected (often a "Test" or "Check Cable" message appears). - Inspect the signal cable from the monitor - worn? Any places where the cable was bent to an extremely small (acute) angle? (less than 75 degrees?) Try gently moving the cable around at either end and see if you get a partial signal on the screen (while connected to the computer). If you do, the signal cable is damaged, if possible replace it. try: www.monoprice.com

Check your signal cable from the system unit, if this persists, then its the display that is not working or try opening the computer, replace is ram with another chip, again if this fails, remove its cmos battery, unplug all the power cables from the mother board, leave it for atleast 20minutes, replace everything and power it on.

I did not see anything regarding to the Power locked out function, may be it's time to call HP. Please post back what you find out from HP.
I look at HP WEBSITE: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01632269&tmp_track_link=ot_recdoc/c01643091/en_us/c01632269/loc:1&lc=en&dlc=en&cc=us&product=3770762


Locking OSD settings
When the OSD is locked, settings cannot be changed in the OSD menu. The OSD functionality is enabled or disabled by pressing the Menu button and holding it for 10 seconds. Upon disabling the OSD, an OSD Lock-out message is displayed for 10 seconds. When the OSD is locked and an OSD menu button is pressed, the OSD Lock-out message is displayed for an additional 10 seconds. When the OSD is locked, pressing the OSD menu button for 10 seconds unlocks the OSD and displays the main menu. Identifying monitor conditions
Special messages display on the monitor screen for the following monitor conditions:

• Input Signal Out of Range : Indicates the monitor does not support the input signal because the resolution and/or refresh rate are set higher than the monitor supports. Recommended refresh rates are as follows:
• For the w1858 monitor: 1366 x 768 @ 60 Hz.
• For the w2338h monitor: 1920 x 1080 @ 60 Hz.
• Monitor Going to Sleep : Indicates the screen display is entering a sleep mode.
• Check Video Cable : Indicates a video input cable is not properly connected to the computer or monitor.
• OSD Lock-out : When the OSD is locked, the warning message OSD Lock displays for 10 seconds.
• No Input Signal : Indicates the monitor is not receiving a video signal from the computer on the monitor video input connector. Check whether the computer or input signal source is off or in the power-save mode.
• Auto Adjustment in Progress : Indicates the auto-adjustment function is active and in process.

On the remote control for your television, there should be a source or input button. Pressing the key repeatedly will switch from cable input to standard tv input, to s-video, or ypbr, or game, or various others. Try doing this and see if the image appears, this awlays works for me. If I am telling you something you have already tried, i am sorry!

I think is a power supply problem,,