No monitor signal

By molax
Mar 30, 2013
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  1. molax

    molax Newcomer, in training Topic Starter Posts: 26

    My PSU is 650W but it is not a known PSU its brand is DELCO and it's from dubai.

    #cobalt006: why is my monitor not getting any signal if I connect the dvd rom? and if not it is functioning pretty well.
  2. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    You more or less have a power problem. When the dvd rom is connected .It is pulling power from the psu.Which is just enough to cause the monitor not to work. If you are able to swap out psu. This would be a good start to solving the problem. I would also go over the whole computer connections to make sure.( It also could be due to a grounding problem.) Which leads back to the PSU or mainboard. My own opinion is you have a bad PSU.
  3. molax

    molax Newcomer, in training Topic Starter Posts: 26

    It does not have monitor signal each time I turn it on when not in use like 6 hours. and to be able to run it normally I have done reconnecting pcie connectors to the gpu. im sick of this routine :(
    can someone help me.. I dont have any other hardware to test.
  4. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

    650W is more than enough for a 7850. The PSU could be failing though, dont rule that out. It doesnt directly correlate to the main issue though.
  5. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    Yes, 650 is more then enough to run his GPU But some where here he has a power issue. He could spend the next month going threw the same thing. He has a main board that will not keep settings. A monitor at boot. With no signal. Plus if he removes the dvd rom. It all works. His best best is run a bench test. Remove every thing except the memory and video. See if it will post. Then go from there adding back hard drive and so forth. This may help narrow down the problem. Instead of trying to guess.

    But don't rule out the PSU yet. I have seen PSU fresh out of the box not work right.
  6. molax

    molax Newcomer, in training Topic Starter Posts: 26

    One thing I have notice is that. when I try to open the side panel or return the side panel of the pc. monitor will lost signal. its so frustrating. by the way, gpu runs 5+ hours w/o any problem. my only issue is that during first turn on it will display no signal. do you think somehow gpu is the problem?
  7. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    If you remove the GPU. Dose it boot up to the on board graphics. With no problems ? If you let it set for say 2 hrs . Will it boot up .With the on board graphics? And dose the monitor keep its signal ? If so it could very well be your GPU. If not then you have another issue going on as I have said before.
  8. molax

    molax Newcomer, in training Topic Starter Posts: 26

    Yes, it works fine using the on bard graphics.

    how can you say gpu is the problem if it works fine if it has signal even a couple of hours of gaming?
  9. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

  10. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    @molex I am not saying your GPU is the problem. You ask if it could be. I ask you if you had these very problems if you used the on board graphics. You said no. Try what JC713 has suggested. If this dose not work. Then you need consider . It may very well be the GPU. Or you may have a problem with the PSU. or main board. With out really trouble shooting them . This will continue till whatever the problems is. Shows it self in full.
  11. molax

    molax Newcomer, in training Topic Starter Posts: 26

    Ok I have tried JC713's advice. I'll update soon.

    P:S when I turned on my pc just this day, it boot normally w/o issues like no monitor signal. for 1month, this is the first time. and note I connected back the dvd rom before turning on the pc.
  12. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

    I dont know why the DVD Rom will have anything to do with anything, but OK lol. The driver will help in gaming performance also, so proceed.
  13. molax

    molax Newcomer, in training Topic Starter Posts: 26

    Hi guys, for 4 days the machine was ok, no problem at all. but the problem came back one morning when I turned on the pc. the no signal occurred again. I tried pushing the power button again and again but it turns out that its not working. what I did was I removed the connection of the dvd rom and reconnect again. and when I hit the power button. the signal came back. my conclusion now is that the power supply is the problem. it happens many times already when my monitor gets no signal I just reconnected the dvd rom and monitor has signal back. thoughts?
     
  14. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

    That is pretty odd. I would RMA the PSU and see if the replacement fixes it. If that doesnt help, it is probably a monitor issue or a graphics card (DVI port) issue.
  15. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    No its not odd. You have a power issue there some where. My guess is still the PSU. It may very well not be pushing its load correctly. I have seen PSU do lots of weird things when they are not good. Right down to just not working.
  16. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

    But if he plugs in the DVD drive, then it should work, because it would be using power.
  17. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    What he is saying is . He has to unplug the dvd rom, Then plug it back in to get the computer to boot. Plus read post 31, Where he takes the side panel off he loose signal to the monitor. Somewhere their is a power issue, More or less grounding issue. But the best places to start would be the psu, Or take each part out of the computer. Then add them back one at a time till he see the problem. With out trouble shooting this as I have said before. It will at one point show the real problem . With more coming with it.
  18. molax

    molax Newcomer, in training Topic Starter Posts: 26

    I have tried the GPU from another computer and it worked just fine. so I am eliminating the GPU as the problem. what puzzled me now is that why would the signal be out when im removing the side panel as well as returning it.
  19. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    Sounds as though you may have a grounding problem. You may need to trouble shoot it, Buy removing one pc part at at a time then reinstalling them one at a time. First I would just install the memory and PSU. Then try booting up and see if it post. With no problems to the monitor, Then add every thing back at one at a time. You may then run a cross the problem.
  20. molax

    molax Newcomer, in training Topic Starter Posts: 26

    I'll try that and update soon. I will just refer to my manual and carefully reassemble the system. what can you suggest to avoid grounding?
  21. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    What I was saying is their maybe a grounding problem, Which in turns means something is not grounding right. This could be your motherboard. So when you do reinstall every thing. Make sure all your brass screw nuts are behind the board and you have paper washers installed before you put the final screws in the motherboard.
  22. molax

    molax Newcomer, in training Topic Starter Posts: 26

    So I reassembled my pc last night and was glad to discover something that is not related to my main problem. I discovered that the front audio connection was not properly connected that is why im wondering why the heck there is no audio in the front panel. aside from that.. I have not seen any washers in my mobo. it was directly screwed to the case. but then I still continue and so far the pc now is working. I dont know when would be the time the problem will appear again. ill just update soon. thanks for the replies by the way!
  23. JC713

    JC713 TechSpot Evangelist Posts: 6,088   +724

    There shouldnt be washer, there are pins for a reason :).
  24. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    Jc713 sense when did they stop using the little red cardboard washer for the motherboard screws? I still use them when building a computer. Just asking.
  25. Cobalt006

    Cobalt006 TechSpot Addict Posts: 1,324   +95

    Hopefully it will not. You are welcome:)


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