First of all,is your power cable properly connected to your system unit.if it is not,connect it properly and turn the system unit on again
secondly,make sure your signal cable from the monitor to the system unit is properly connected
after following these instructions,reboot your computer again.
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no input or signal means that the monitor is not receiving any signal from the CPU and if the power light is amber then and the cpu works fine then there could be a problem with the cable connecting the CPU and the monitor ...check the cable.
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.
The message input signal means no signal is being feed to the monitor. Check the cable use to connect the monitor to the video card.. fix and secure the connection. If the computer is reading and you know its working, check the video card. Turn off the CPU disconnect the video card from the motherboard and reconnect. Try to open your CPU and see if it reacts with your monitor. If nothing happens replace your video card
that is the problem of cpu not a monitor to confirm disconnect signal cable and power on. monitor will show "no signal check signal cable" it means that monitor is ok and fault lies in cpu .then open the cpu and disconnect ram and listen the beep. contineus beep should be heard then ram is faulty replace it. if no beep heard then motherboard is faulty .
it thinks this is no input signal. make sure your computer is on and the cables are secure, switch your screen with a known good one from a freind. this will rule out your computer. if the pc is fgood maybe go into the bad monitor menu settings and make sure the input mode is correct. if this is not the cause you may need to have it repair, your monitor video or display board maybe bad.
Hi Rick, Most common cause of this error is when the video signal cables are knocked off rendering the connection from the monitor to the CPU loose. Turn off the PC and secure all connections. Have you had your computer moved or repaired where you need to remove connections? Some PCs have more than one video cards (video output) and you may have connected it in the wrong video port. You can isolate the problem further by connecting your CPU to a known working monitor (office, freind's, neighbor, 2nd home PC). The other way is to isolate the problem is to connect your problematic monitor to a known working PC and see if video will be displayed. If video is present, your CPU's video card has gone bad or the contacts are not seated properly in the slot. Best Regards