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VGA no signal means "no signal" from the computer on the VGA (blue plug) cable... ...if the computer works check the cord for loose connection or get a new cord...if the computer is hooked to the digital cable (DVI/white plug)...set the signal source on the monitor to digital...
Symptom : No Image on the screen. I cannot turn on the monitor.
Checklist 1 : Is the power connected properly ?
Action : Check the power cord connection and supply.
Checklist 2 : Can you see "No Connection. Check Signal Cable" on the screen ?
Action : Check the signal cable connection.
Checklist 3 : If the power is on, reboot the computer to see the initial screen ( the login screen), which can be seen.
Action : * If the initial screen (the login screen appears, boot the computer in the applicable mode (the safe mode for Windows 98/95) and then change the frequency of the video card.
* Note : If the initial screen ( the login screen) does not appear, contact a service center or your dealer.
Sympton : I cannot see the ON Screen Display.
Checklist : Have you locked the On Screen Display (OSD) Menu to prevent changes ?
Action : Unlock the OSD by pressing the MENU button for atleast 10 seconds.
Symptom : No images on the screen. I cannot turn on the monitor.
Checklist 1 : Is the power cord connecte properly.
Action : Check the power cord connection and supply.
Checklist 2 : Can you see "Check Signal Cable" on the screen ?
Action : (Connected using the D-sub cable)
Check the signal cable connection.
Checklist 3 : If the power is on, reboot the computer to see the initial screen (login screen), which can be seen.
Action : If the initial screen( the login screen) appears, boot the computer in the applicable mode (the safe mode for Windows ME/XP?2000) and then change the frequency of the video card.
Note : If the initial screen does not appear, contact the Service Center or your dealer.
Checklist 4 : Can you see "Not OPtimum Mode", "Recommended Mode 1440 X 900 60 Hz" on the screen.
Action : You can see this message when the signal from the video card exceeds the maximum resolution and frequency that the monitor can handle properly.
Adjust the maximum resolution and frequency that the monitor can handle properly.
Checklist 5 : There is no image on the screen. Is the power indicator on the monitor blinking at 1 second intervals ?
Action : The monitor is in Powersafe mode.
Press a key on the keyboard activate the monitor and restore the image on the screen.
If there is still no image on the screen, press the On button. Then press any key on the keyboard again to activate the monitor and restore the image on the screen.
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.
You first take post( power on self test) connect power cord & disconnect signal cable you will see massage no signal check siganl cable then problem will be in cpu this problem may be solved by cleaning dust in cpu if montor shows no display then problem will in monitor open it check o/p of smps if not disolder path of eht if o/p comes then eht is faulty replace it
It will do this when it's not getting a video signal from the computer. Make sure that the signal cable is firmly plugged in at both ends. Also verify that the computer is actually starting up. The monitor may not be getting a signal because the computer isn't sending any.
if monitor is gave no siganl .Firstaly Check monitor Signal Cable For connected of ur system vga port. if Siganal cable is connected ur pc then Check ur System IF system is gave the Display anthore monitor . Then Proble is ur monitor signal Cable .So Plz Change Monitor Signale Cable.
Turn on the computer and complete the following steps:
Step 1: Check cable connections
(If you can see the initial HP or Compaq logo screen but later lose the picture, you can skip to Step 2.)
check the video cable connection on the back of the computer and on the monitor. Make sure that it is connected properly and the connecting screws are tight. Turn the monitor off and then back on again (while the computer is on) to see if an image appears.
Some Flat Panel monitors have two similar power input connections placed side-by-side on the back of the monitor, which sometimes allows them to get confused for one another.
One connector is used to supply power to the speakers with a separate power cord, while the other connector is used for the monitor's power adapter.
Ensure that you have the monitor's power adapter cord plugged into the power connector and not the speaker connector.
After you have reconnected the power cord, turn on the monitor (while the computer is on) to see if an image appears. If there is still no image, continue to the next Step.
Step 2: Resetting the monitor
At first setup, or under certain signal conditions, the monitor may not be able to switch to a new display resolution. Do NOT shut down or restart the computer. Instead, perform the following steps:
Turn off the monitor using the Power button on the front.
If the Power button does not respond, unplug the power cord from the back of monitor and wait five seconds.
Plug the power cord back in.
You should see the image from the computer on the screen.