I get "No Signal" shortly after the computer is turned.
My monitor is an ACER X241W.
This also happens when the computer returns from the sleep mode. The "No Signal" comes on for a little over a minute, then the monitor turns black, then it comes back on and the "No Signal" message is gone and the computer/monitor work fine then. The No Signal block is light grey with a lighter grey border and the script is white. The block is about 3 units high and 8 units wide. The computer works with the "No Signal" block on but I cannot view what is behind the block. I cannot move the block out of the way. Occasionally I have this problem go away - I don't know what I've done to make it go away - but it comes back again. I've had it with a Compaq Computer and now with a Dell Computer.
This is anoying, because the computer is virtually useless for the first 3 minutes after I turn it on.
Anxiously awaiting a solution
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I disagree with ikkenom only due to the symptom of the flashing blue light. This would indicate to me that the monitor is not getting any display signal and is in sleep mode at least the is what happens on my Samsung monitor. Used to be that they use a two color led in the monitor, green when ON and getting display signal and amber or orange when in sleep mode. I would check the computer by trying a different monitor. If you have a second monitor, great, if not, maybe a friend will let you bring your computer over and try the computer with their monitor. Could also be a display adapter setting. Do you get any change when you first turn on your computer? i.e. Do you get the BIOS or manufacturer screen when first turned on? Also if you disconnect the monitor cable from the computer and power cycle the monitor, do you get a No Signal display for a few seconds before the monitor goes black and the blue light starts flashing?
Let me know what happens with the testing above or if you need further instructions to carry out testing.
Unfortunately, this is a standard problem, as when your laptop goes into sleep mode, it shuts off power to the secondary monitor, without giving it the signal to go into sleep mode. You could try digging around your settings, but most likely you'll just need to turn off the monitor when you're not using it.
Connect the monitor to some other computer, e.g., a notebook, and see if it does the same thing. If it does, then the monitor is the problem.
If it does not, then your computer is not putting-out any "video" signal, and so the monitor goes to "sleep".
If you have MORE than one VGA-output port on your computer, connect your monitor to the "other" VGA port.
Or, press-and-hold the ON/OFF button on your computer, to force it to completely shutdown.
This Problem is Acer(s) Monitors. Though it is a nuisance one fix That has work for many is the Unplugging after it goes back to Good (viewable) screen. I have hooked mine up to an inexpensive Power strip to make it easier for me and just turn off at time indicated above and Viola Simple is as Simple does :)
I have answered this in other threads but to reiterate.... The Gray rectangle "No Signal" I use a Power Strip and Turn off as soon as it cycles back to Normal screen. It is so much easier then to unplug and Plug back in when it does happen. As for the Newer Problem(s) and I too have had mine for only couple of years... Copied from Previous post This is not a Fix to the Problem, If you read some of the other
"fixes" that relate to this you will see that it is a more serious
problem and one that Acer should Do the Honorable Thing and have a
I actually went in side on three of the Same Monitors and one that was
a 21 inch and found the problem is "HEAT"
You can see where a Board actually shows Browning on the Circuitry I am
Going to try to order a new board P/N:AS08B360411.
I will update as soon as work is completed.
It sounds very normal; when the video signal from the computer disappears, most late monitors will go to standby mode but most will also tell you it's going to sleep with some kind of message.
Turning the main system off doesn't normally disconnect the AC from the monitor so what you describe is that the monitor is plugged into a receptacle of its own, not one that you are turning off with the PC.
BTW, PCs and TVs (including monitors) aren't really 'off' when they are off. They have a small amount of current drain that serves to keep alive certain circuits so they can respond to, for example, the return of the video signal or, in the case of a TV set, a command to power up from your remote.
They could not respond unless they can interpret the signal to wake up.