Monitor loses power randomly.

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.

Hope this helps some.

Check for a loose power cord on the back of the monitor (quite common).

Push and hold your monitor's POWER button until the monitor shuts off completely.

After it is shut off, press the POWER button again to turn it back on and the lock should be disabled.

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.

Unplug the monitor from CPU Keep the monitor alone and see any problem. If not try to plug to some laptop and check again. We want to sort out the problem from monitor or CPU..

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

Nssms

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