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MOTHERBOARD VIDEO PORT IS NOT WORKING BUT THE LCD IS POWER ON AND THE CPU IS ON BUT NO DISPLAY. WHAT IS THE PROBLEM ?

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  • Gary Rice
    Gary Rice May 11, 2010

    . Try using the lcd on another pc - as it may be the lcd - this is usually the problem. If Try booting into safe mode - this requires you reboot and tap F-8 [ on
    99% of all pc's] see if you get it then to work on your pc. Most likely it is the lcd - -they are well known for internal problems with back lights and capacitors.

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Hi Thanks for your question.
Check the following.
RAM memory - reseat and try separate if two modules. Use known good module to determine if this is a fault
Graphics Card
Try and reseat graphics card and best test in different PC
On the third place PSU (Power Supply Unit) On the fourth Motherboard
In two last cases you will need tech to test/replace parts.
Good Luck

Posted on May 05, 2010

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Hi check the monitor is working, next the check the RAM & CMOS battery or change, final add a addon Video Card and check

Posted on May 05, 2010

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My hp 1502 lcd monitor only shows a white screen


If you don't use an identical monitors, then they may not work if your video card can not handle them. The "check video cable" it means the monitor does not get a signal, and it does not mean that the monitor is a problematic monitor. You can test this monitor as a single monitor (and try to connect it using first video port, and then move it to the second video port).

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Toshiba satllite power on no display


Possible that the LCD panel is faulty , possible that the linking wire to the LCD panel is open.
Connect an external display to the PC and if the PC boots and works without any issues then the fault is associated only with the display. It can be a power issue to the panel, loss of back light or drive from the motherboard.
You need to trace and check continuity from the motherboard to the display unit to confirm.

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I am currently on my laptop because when I turn on my desktop, the monitor (ViewSonic VX2235wm) powers on with a message that says No Signal Digital and then turns off. Any suggestions?


hi; your monitor has no problem, its your cpu. Try to hook your monitor to your laptop,and change the display setting to your LCD monitor. If LCD has displaying no signal mean signal coming form the Video card of your CPU try to visualize if you hearing some beeps into from CPU, some motherboard has beep codes if there's an error or failure to your CPU, 1 beep means its good system test. if you don't hear any beeps, try to check first your Video Card marmeto12_21.jpg if you have Spare try to replace it, try to reset all the connectors even Memory card to its slot. reset means pull the connectors and place it back again, also check the power supply of cpu if still functioning good.but you can test it by multi volt meter. if nothing happens check your motherboard most common failure is bloating capacitor, and overheating chipset. thanks....................hope this helps...................

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1 Answer

I have an 17" aopen


Hello
You've said that there is no start up with your hdd even you hdd is defective your CPU will turn on and have display in your monitor try to turn your computer on then push the button delete or a f1 button it depends on your bios that you have using. If your PC tun and display the bios it means your motherboard is good. Then in the bios set up put it in the main section you will see if your HDD is detected by your PC if not then you HDD is defective o have a lose contact on its connectors.
If you don't have a display try to check if your CPU have a video card. Turn off your PC then pull out VGA connector that are connected to your computer then pull out the Video card in your motherboard which connected to a PCI slot then tun on your pc using the on board VGA connector which is located at the back of your CPU which is beside the parallel port and on the lower of the mouse and key board connectors. If the problem is still there try to clean your Memory cards which is located inside your CPU unit and located at the left side your motherboard and beside your processor. Clean it with a pencil eraser. Then put it again in your motherboard. If problem is still there. Try to check your power supply may it dropping voltage where the did not full fill the requirements of your computer. Hope this will help.

Jul 18, 2011 | Computers & Internet

1 Answer

My cpu is on just i power off the monitor.,series is samsung SyncMasterB1930 is the model., now when i am trying to on the monitor the monitor is not responding it is still power off mode.


First check if the monitor is functional by removing the monitor cable connected to the CPU, once disconnected you should see a onscreen display on the monitor (Keep the power cable intact).

Second check if the CPU is working (not stuck / hung) if you hear the windows logging on sound, then your CPU is fine. If you do not have sound enabled during startup or no speakers then once the system is on give it some time to load windows and then keep tapping the Caps lock or the num lock key, if the lights respond / glow on and off when you press the keys then the CPU is working.

Third check if the CPU has two display ports (in case if you have a onboard VGA and a seperate video card) disconnect it from one port and insert it in another port and restart the computer and see it it works. If you do not have two video ports then skip this step.

Fourth - Restart the computer and keep tapping F8 Key while restarting, in the windows advanced menu choose enable VGA mode or Low resolution video mode (based on XP or Vista/Win 7 the menu changes), if you can see that menu then the issue is with the display settings only. Once in VGA mode or low resolution mode reduce the video resolution settings and restart the computer.

Please revert if you need further assistance, or clarification.
Thank you for contacting Fixya

Jan 03, 2011 | Samsung Computers & Internet

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No display. CPU power goes within 10secs(before booting).


Install an add-in video-card, and connect a second monitor to the VGA port on that video-card. Then, see if the motherboard outputs anything to EITHER monitor.

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1 Answer

My laptop monitor is not woking


When you plug the DC power adapter and press on the power button, the laptop starts making normal noises, the LEDs work properly but noting appears on the screen. The laptop will not start.
First of all, take a closer look at the LCD screen. Look at the screen under bright light. It’s possible that the image is still on the screen but it’s very faint.
If there is no image on the laptop LCD screen, test the laptop with an external monitor. Connect an external monitor to the VGA port on your laptop and turn the laptop on. You can toggle video output between the internal LCD screen and external monitor by pressing Fn and F4 keys simultaneously on HP laptops, Fn and F5 keys on Toshiba laptops, Fn and F7 keys on IBM laptops. Other laptops may use different key combinations.
Let’s say the external monitor works fine but the internal LCD screen has no image at all. If that’s the case, your problem could be related to the LCD screen or the video cable. Also, make sure the video cable makes good connection with the motherboard and the LCD screen. Try reconnecting, reseating the cable.
In my case, both internal and external monitors were absolutely dead. Neither of them had image. That means the problem is not related to the LCD screen or the video cable. From my experience I know that this problem could be related to the laptop memory.
Try reseating the memory module, maybe it’s not making good connection with the memory slot. Try cleaning contacts on the memory module with pen eraser. Try moving the memory module into another slot. Try replacing the memory module with another known good module, it’s possible that your original module is dead.
If you have two memory modules installed you can try removing them one by one, it’s possible that one of the modules is bad. Try installing different memory modules into different memory slots.

In my case reseating, swapping the memory module didn’t help. I was pretty confident that my problem is not memory related and I moved on.
Try removing battery, hard drive and DVD drive and turning on the laptop without these components.
Also, try turning on the laptop with an external monitor when the video cable is unplugged from the motherboard. If the laptop start with video on the external monitor, apparently there is something wrong with the laptop display panel.
Finally, disassemble the laptop and removed the motherboard.
1. Motherboard. Like on most laptops, in my case the video card is integrated into the motherboard
2. CPU with heatsink and cooling fan.
3. Known good memory module.
4. The power button board witch you need to turn on the system.
5. Working DC power adapter.

Still cannot get any video on the external monitor. The system turns on, the cooling fan starts spinning but there is no video.
At this point I’m 95% sure that the motherboard is dead. CPU failures are not very common, so it must be bad motherboard.

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3 Answers

No display


After all your troubleshooting, I think this is likely to be as a result of your processor over-heating, maybe because of your environment, or because the fan is not cooling the processor properly again. Therefore my suggestion would be for you to unscrew your system (If you can do it by yourself), and try to clean, or better still replace your processor fan.
If you cant do it by yourself, you can easily get a technician to do it for you. This solution is actually if your processor is not yet burnt.
But if your processor is burnt, then you might have to change it to a new compatible one. but before changing it, try to test the motherboard with another working, compatible processor first, just to be more sure.
Then always make sure that your PC is in a well ventilated, cool environment and that the environment is free from dusts.
Hope this helps you out.
Goodluck!

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1 Answer

NO VIDEO


Are you using the onboard video or a display card adaptor?

1. If you are using the onboard video then try installing a known working PCI or AGP display card to test if the problem is onboard video or the actual motherboard.

2. If you are using a display card then try another known working display card (PCI or AGP) to test whether it's your displaycard that is faulty.

3. If it still doen't work then try removing your memory modules on the motherboard and replace them with known working memory.

4. If it still doesn't work then try removing your CPU and reinserting it again (be carefull as you do not want to damage your CPU!).

5. If it is still not working then you may need to replace your motherboard or take your PC into a repair facility.

Thanks
C

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1 Answer

Acer x223w monitor - unexplained system freezes


is your lcd has a dvi port? aside from vga? and also is your video card has a dvi port? if all these questions meet, first uninstall the driver of your video card. Then, you need to switch your cable, in order to do this, you must place the one end of your cable to the dvi port of the cpu and the other end to your lcd dvi port. and reinstall the driver again of your video card. see if it works. because there is a certain problem that vga port configuration differs from the
dvi port. that's why when playing games, especially online games. sometimes your system will get corrupted.

Good luck! have a nice day

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