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Monitor not working, but showing power on when not connected to pc

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Your video card has a problem if you are using an after maket video card (if you got an upgrade) try unpluging it and connecting your monitor to your mainboard video card (vga slot) its the medium size blue port

Posted on Sep 08, 2008

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Acer aspire x1200 powers on but doesn't connect to monitor


  • Kindly check the cable that connect between cpu and monitor.
  • Re-insert RAM
  • Input Voltage if not connected using UPS.
Thank you for asking on fixya.com

Mar 20, 2013 | Acer Aspire X1200 Desktop PC - Athlon X2...

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I have a hp v75 old desktop computer that I brought from my garage, I got everything plugged up, but the monitor wouldn't show anything.. I googled it and I didn't think it would work but I just...


As your monitor had showed up once before, I assume it is still in a good condition. The next time, you were not able to wake up the monitor by pressing the power button on your CPU cabinet, which means, the power supply to the monitor may have been interrupted. To check whether your monitor is working properly, plug it to any direct connection and see if the power button on the monitor is flashing. If this works, get everything plugged up, check all the connections properly and try to run the computer again.

Hope this helps, Mrityunjay.

Jun 28, 2012 | PC Desktops

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PC SWITCHS ON BUT NO PICTURE


1. Check to make sure your monitor is on! Some monitors have more than one power button or switch - check to make sure they're all switched on.Check for disconnected monitor power cable connections. Your monitor might be working fine and your only problem may be a loose or unplugged monitor power cable.Note: A disconnected monitor power cable could be the cause of your problem if your monitor's power light is completely off.Check for disconnected monitor data cable connections. Again, your monitor might be turning on without a problem but no information can get to it because the cable that connects your monitor to your computer is disconnected or loose.Note: A disconnected monitor data cable could be the cause of your problem if your monitor's power light is on but is amber or yellow instead of green.Turn the monitor's brightness and contrast settings completely up. Your monitor might be showing information but you just can't see it because these display settings are too dark.Note: Most monitors today have a single onscreen interface for all settings, including brightness and contrast. If it turns out that your monitor isn't working at all then you'll likely not have access to this interface. An older monitor might have manual knobs for adjusting these settings.Test that your computer is working correctly by connecting a different monitor that you are certain is working properly to your PC. Your monitor may be working fine but your computer might not be sending information to it.If the new monitor you connected does not show anything either, proceed to Step 6.If the new monitor you connected does show information from your computer, proceed to Step 7.Important: When testing with the new monitor, make sure you use the data cable that came with it and not the one from your original monitor.Determine why your computer isn't sending information to your monitor. Since neither monitor works, you now know that the computer is not sending information to the monitor. In other words, you've proven that your computer is the reason that nothing shows up on your monitor.Chances are your original monitor is working fine.Test your original monitor with a monitor data cable that you know is working. It's possible that the monitor itself is working properly but it can't receive information from the computer because the cable that connects the monitor to the PC is no longer working.Note: If possible, test using the data cable from the monitor that you successfully tested with in Step 5. If not, purchase a replacement monitor data cable to test with.Note: The data cable on some older monitors are permanently connected to the monitor and are not replaceable. In these cases, you'll have to skip this step and proceed to Step 8 Replace the monitor.

Sep 27, 2011 | Mesh Matrix 6000+ DX PC Desktop

1 Answer

My pc does not give display ? Why


Time Required: Testing a monitor could take from a few minutes to much longer depending on the cause of the problem Here's How:
  1. Check to make sure your monitor is on! Some monitors have more than one power button or switch - check to make sure they're all switched on.
  2. Check for disconnected monitor power cable connections. Your monitor might be working fine and your only problem may be a loose or unplugged monitor power cable. Note: A disconnected monitor power cable could be the cause of your problem if your monitor's power light is completely off.
  3. Check for disconnected monitor data cable connections. Again, your monitor might be turning on without a problem but no information can get to it because the cable that connects your monitor to your computer is disconnected or loose.
    Note: A disconnected monitor data cable could be the cause of your problem if your monitor's power light is on but is amber or yellow instead of green.
  4. Turn the monitor's brightness and contrast settings completely up. Your monitor might be showing information but you just can't see it because these display settings are too dark.
    Note: Most monitors today have a single onscreen interface for all settings, including brightness and contrast. If it turns out that your monitor isn't working at all then you'll likely not have access to this interface. An older monitor might have manual knobs for adjusting these settings.
  5. Test that your computer is working correctly by connecting a different monitor that you are certain is working properly to your PC. Your monitor may be working fine but your computer might not be sending information to it.
    • If the new monitor you connected does not show anything either, proceed to Step 6.
    • If the new monitor you connected does show information from your computer, proceed to Step 7.
    Important: When testing with the new monitor, make sure you use the data cable that came with it and not the one from your original monitor.
  6. Determine why your computer isn't sending information to your monitor. Since neither monitor works, you now know that the computer is not sending information to the monitor. In other words, you've proven that your computer is the reason that nothing shows up on your monitor.
    Chances are your original monitor is working fine.
  7. Test your original monitor with a monitor data cable that you know is working. It's possible that the monitor itself is working properly but it can't receive information from the computer because the cable that connects the monitor to the PC is no longer working.
    Note: If possible, test using the data cable from the monitor that you successfully tested with in Step 5. If not, purchase a replacement monitor data cable to test with.
    Note: The data cable on some older monitors are permanently connected to the monitor and are not replaceable. In these cases, you'll have to skip this step and proceed to Step 8.
  8. Replace the monitor.
    WARNING: A computer monitor is not a user serviceable device. In other words - do not open the monitor and attempt to repair it yourself. If you would rather have your dead monitor serviced instead of replaced then please let a professional do it.

Aug 02, 2010 | Dell Dimension 2400 PC Desktop

1 Answer

My pc lights and fans work, but the screen shows nothing.


Check everything you need to check.

Follow the following tips and guides.

  1. Check if your computer monitor is tightly connected or rather properly connected to the CPU.
  2. If it is connected properly but still doesn't functions, try plugging another monitor and see if it lights and works.
  3. If the other Monitor runs then the old monitor is your problem. (maybe the problem is the cables or the tube itself.
  4. As for me, i advice you to use a monitor which gets its power from the CPU. (the power cord of your Monitor is not a plug but rather a connection from Monitor to CPU.)
If you have other questions and concerns regarding your problem and the guide shown above, feel free to update this post.

If you also need some drivers, kindly update me.

Apr 02, 2010 | E-Machines T3958 (827103050974) PC Desktop

1 Answer

Monitor shows no picture. out of ideas, sos


1.check out the monitor led light is glowing,, if it does'nt ur monitor have power problem or fuse blownout,
2. remove the data cable (from monitor to pc) and switch on the monitor if it is on problem with ur motherboard else contact me i'll give u other soltion prajwal_yes@yahoo.com

Mar 04, 2010 | PC Desktops

3 Answers

What does the red light mean next to the power button?


The red light next to the power button is usuall the hard drive led which should blink every time the hard drive is in use, there is normally a green or yellow light for the power that shoukld stay on constant when the computer is on.

Feb 09, 2010 | Intel Compaq EVO D500 (RBMDTCPQP42400) PC...

1 Answer

Amber light on power button


Check to see if there are any loose connections to the memory cards on the memory board. Make sure the data cable to the drives are connected properly. Is the fan in the power supply on?

Jul 27, 2008 | Dell Dimension 8300 PC Desktop

1 Answer

No signal on monitor


Check that the power is plugged into the back of the monitor and also to the power point, make sure power point is ON. If anything pull plugs out and re-connect both just to make sure.

Make sure monitor cable is also plugged into the back of the computer.
Turn computer on and make sure it beeps and looks like it has hard disk activity to show it is booting into windows. If it doesn't beep or show activity it could be your PC having an issue else it is possibly your monitor.

To double check try your monitor on another PC and try another monitor on your PC to see which has failed.

Jan 25, 2008 | Dell Dimension 3000 PC Desktop

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