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In regards to your issue with your monitor: For a monitor to display "no signal input" there is likely a problem with the monitor making a connection to your input source (yes I know duh). First and easiest thing to fix this is to check your cables going between your computer and monitor, if your computer and monitor start out working and then fail to communicate, there is a good chance that the cable might be coming loose just enough that the connection fails. I might suggest that if you have, as you say another computer, that you try swapping monitors to check where the problem lies.
1. are your drivers new? 2. possible from video card 3. try not to wiggle cords :)) it's not from there 4. try testing the monitor on other pc's/video board 5. if it work on other pc/video board then try updating your driver or refresh rate to low
It could be a faulty power cord. Try plugging it in and moving the cord around in the areas where it takes the most movement. Do the same with the data cable to see if you get a response there. If your cables are fine, the problem is most likely hardware in the monitor - in that case you're better off replacing the monitor.
It is the capacitor on the power to the monitor. I have replaced about 5 so for. The capacitor is like 69 cents. Open it up and look at the circuit board where the power plugs into and see if any capacitor are bubbled up. If so then its a bad capacitor.
Is your monitor a CRT or LCD type. For CRT type information follows. In most cases your simptoms indicate a problem with the High Voltage or blanking circuits. Caution the High voltage can be as much as 40,000 volts and even unplugged from the wall the picture tube can continue to hold voltage (enough to hurt you). Do you here a snapping sound from the back of the crt. If you do the high voltage is shorting out and the protection circuit is turning off the high voltage. If you do not here sparking another possible cause is a faulty capacitor in the protection circuit or the flyback (high voltage transformer). Unless you are educated in electronic circuit repair this one is probable beyond your curren knowledge level. You can try taking the back off and cleaning out all the dust, but remember to stay away from the red wire that goes to the picture tube. Use only non metal cleaning tools. Good Luck
Sorry to have to tell you this, but this is common in LCD monitors. The reason that it is going black when it boots is for one of two reasons. You either have a bad power supply that powers your LCD or your LCD's backlight is blown. These can be repaired or you can purchase a new one. But if it goes black 9 times out of 10 is because the backlight is bad. These can be repaired!
i fixed this problem by unplugging the monitor, unplugging the video cables. Then hold down the power button while plugging it back in. Release power button and then press power button for on. It worked then. I got the icon for no signal, i plugged back in my monitors. Sceptre X9W
Screen going black would indicate a data flow problem- but then you would see a warning saying words to this affect
or a back light/inverter problem.
If by looking slightly sideways at the sreen you can see 'shadow images'[try a moving image to be syre] then you have a backlight /inverter problem
If you see nothing at all ckecj the data cable pins- one or more may be bent