My daughter unplugged the monitor cable to use with her laptop and the TV. Now when it is reconnected and the computer turned on the computer boots and windows starts to load. Then I get themesage 'No Signal Detected' and the screen goes blank. this happens before windows has finished loading. Windows continues to load because I hear the windows tune after a short while, but the screen remains blank. Can anyone help.
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Re: No Signal Detected
Here is an easier and safer way to straighten your connector pins if you find any that are bent. Take a mechanical pencil without lead (.5 works ok but .7 may be easier to use) and ground it by touching it to your power supply. Then work the CPU pin slowly into the pencil and slowly bend the pin up. If you?re patient and careful you can usually straighten out any pins that have been bent.
If any of the pins are broken don?t toss the monitor, its a relatively quick and inexpensive fix for a local computer repair shop.
Good luck and let us know what the outcome is.
Is this on a notebook or on your regular PC?The answer will determine what the solution is.
You can first check to see if the little pins on the plug are all straight and none are bent or broken. If one of he pins is bent then you can try gently straighten it (unplug the monitor from the wall first) If any of the pins are broken then either the cable needs to be replaced or the monior has to be replaced.
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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.
kkjsr00, You must narrow down the faulty component!!! You must prove what is working and what is not working!! Beg, borrow, steal a "known-good" monitor to prove your pc is operating perfectly and will display the WIN-desktop screen on it. If your pc is A-ok then visit this web blog: http://www.lesliewong.us/blog/2005/05/02/hp-pavilion-f1703-flat-panel-display-blackout-solution/ kkjsr00, when strange and weird stuff starts to appear on the screen of "cold-cathode-fluorescent-lamp" back-lit lcd displays the first place I would look at would be the units internal "switch-mode-power-supply/ccfl inverter supply".. No, No, No, unit not going to sleep!!! SMPS/inverter going into SHUTDOWN mode having detected a fault condition with itself or other circuit and is trying to save itself from catastrophic, nonrecoverable failure. e.g. smoke, fire, burn down house, etc. Do some reading in my profile and those of other fixya tech's and you will find more than enough info to help with your problem. Good luck with repair of "flakey" solder joint or bad electrolytic filter capacitor PLAGUE problem. Yes, you sure have a lot of reading to do!! 12fixlouie or old file is louie12fix also try "buddymc" , "budmrtn" profiles for more info.
1. Turn off both your computer and the monitor.
2. Unplug the video cable from the back of the computer.
3. Turn on the monitor.
If the monitor is functioning properly, you will see a box in the illustration below.
This box appears during normal operation if the video cable becomes disconnected or
4. Turn off your monitor and reconnect the video cable; then turn on both your computer and the
If your monitor screen remains blank after using the previous procedure, check your video
controller and computer system; your monitor is functioning properly.
The Power supply inside the monitor can be hazardous and donot open the monitor while power on.
Donot work with the monitor when it is open and the power supply is on.
If there is something wrong with the input signal, a message appears on the screen or the
screen goes blank although the power indicator LED is still on. The message may indicate
that the monitor is out of scan range or that you need to check the signal cable.
TRY UNPLUGGING COMPUTER AND MONITOR AND DISCONNECTING MONITOR FROM THE BACK OF THE COMPUTER. BE SURE TO UNPLUG AND NOT TURN OFF. WAIT ONE MINUTE THEN PLUG COMPUTER BACK IN . RECONNECT MONITOR TO THE BACK OF THE COMPUTER AND PLUG IN. IF THIS WORKS, WAIT FOR NEW HARDWARE RECOGNIZED TO COME ON. FOLLOW INSTRUCTIONS, IF ANY. RESTART COMPUTER.
There are a few things you can check.
First, try to see if the monitor cables are firmly connected on both sides (computer and monitor) no need to remove any cable for now just check the monitor cables (ends should be blue or white on both sides)
Then check if you got an imput button on your screen (like all TV and some monitors now has) This input gives you the choice between a few possible connections and it may be on the wrong one. Just cycle trough the input modes and I think you will have your image back.
If Still, you dont see anything, try a different monitor or try to connect your monitor on a different PC/laptop.
In fact blinking blue could be there because the monitor is awaiting a signal on the input it's listening. At worst it could be because your video chip/card dont send a signal to your monitor, could happen, but imo it's probably not the case.
Please work through the following steps to troubleshoot your no power problem with a ViewSonic Monitor:
Troubleshooting Power Issues:
Disconnect and securely reconnect the Power Cable. Then retry the Power Switch.
Try using another Power Cable. Most Computers use a similar power cable.
Check the power source using another electrical device (like a radio) to make sure the power source is supplying sufficient voltage.
If the monitor is plugged into a power strip or extension cord, try connecting to a dedicated wall outlet.
If you are using a Thinpanel series LCD (e.g. VP191b, VP201b, etc) check the power switch next to the AC input port on the monitor and make sure it is ON.
If you are using an LCD TV, note that some models have a main power switch on the back side – confirm it is on the ON position.
If using a remote control, make sure the battery is properly installed.
If the LED is on, but there is no video, use the following links:
LCD or CRT monitors : Orange/Amber LED - monitor is receiving power, but no video signal received:
Verify that the computer is turned on. You can test this by pressing the Num Lock key on your keyboard once or twice. If the Num Lock light does not turn on/off, then the computer is not working.
Make sure the video cable supplied with the panel is tightly secured to the video card in the computer.
Check video cable to ensure all pins are straight. If the cable is detachable, try a different video cable
If your monitor is connected to a Laptop or Notebook computer, the video output on your laptop may be disabled. Consult your laptop’s user manual or contact the laptop manufacturer for assistance on enabling this feature.
Connect the monitor to a different computer system (if available) to see if the issue is with the video card or the monitor. Check the user's guide to see if any special conversion connector or adapter is required for proper signal continuity between the video card and the LCD.
If the LED is Red and the monitor has no video (no picture), please try the display with another system.
Green LED - A signal is detected from the video source:
Check the video cable to verify that the cable connection is good and the pins are not bent or broken.
Self-Test Feature Check (STFC)
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:
Turn off both your computer and the monitor.
Unplug the video cable from the back of the computer. To ensure proper Self-Test operation, remove Analog (blue connector) cables from the back of computer.
Turn on the monitor.
The floating 'Dell - self-test Feature Check' dialog box should appear on-screen (against a black background) if the monitor cannot sense a video signal and is working correctly. While in self-test mode, the power LED remains green and the self-test pattern will scroll through the screen continually.
Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your video controller and computer system; your monitor is functioning properly.
This problem is most likely to be caused by a bent or broken pin on the CRT video cable at the VGA connector, OR, this could also be caused by a damaged VGA connector on the back of the laptop.
If neither VGA connector is at fault, the problem could be caused a damaged (kinked) CRT data cable, or internal damage to the VGA connector on the back of the laptop, though I suspect the problem is more likely to be external, and you probably won't have to disassemble the laptop to locate the culprit...