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Sounds like your video card or monitor is bad. Most likely it's the video card because if it was the monitor the No Signal Input could not appear on the screen. To isolate the problem try connecting another monitor to the computer. Borrow a monitor from a neighbor, friend, relative or co-worker and connect it to the computer. If the Borrowed Monitor displays ok without a problem then your original monitor is bad. If the Borrowed monitor has the same issue of No Input Signal as your original monitor, then your video card inside the computer is bad.
you may try this came from manual.
Power Management" "countdown 20 sec
INPUT SIGNAL OUT OF RANGE
This OSD may appear to inform you that the signal being sent to the display is not within
its frequency range. In this case, you would need to check the resolution and refresh rate
you have your video card set to, and adjust to be within the range of the display
Check signal cable means that your monitor wire is not connected properly. So remove your cable connect it tightly once again. Tightly connect with cpu and power supply. Thanks for using fixya
The fact that you see the "No Signal" message indicates that the display is functioning properly. The problem is with the input section. Verify that you have the correct input selected. Other than that, the input board is the likely defective section. This is not uncommon and will require service. This is not likely to be a DIY repair if the input board is defective.
I suspect that the problem is with your PC, and in particular your video card. The fact that your monitor is displaying the logo indicates that the monitor is not receiving a signal from your computer. You may want to try hooking the monitor up to another PC and see if that is the problem. The fact that your monitor turned off and on for a few times also indicated that the signal from the PC video card was sporadic and finally failed leaving you with the monitor logo. Disconnect the PC from the monitor and see if the logo is there. Also check the cable from your video card to your monitor to see if the cable is bad. You may have to borrow a video cable from a friend to test this out.
If it has the standard VGA cable just go to your local electronics store and purchase a new VGA cable and all should be fine. I would take the old cable with you that way you are replacing the cable with the exact same type of cable.
I had the same problem with the "signal out of range" box in the middle of the screen. I went to Display on Control Panel and clicked the Settings tab. Click the monitor icon for the Wacom tablet in the window (if you are using more than one monitor) and set the screen resolutioin to 1280 by 800 pixels. The "signal out of range" box disappeared.
Please boot system hold f8 key after cmos screen passes,
login to windows, goto control panel, display, and change setting of monitor to 640 by 480. Savs reboot to screen. Change to other setting after logged into Windos again.
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