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Monitor not displaying

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#1 DrUNC83


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Posted 14 October 2017 - 10:28 PM

So I am trying to set up a home theater computer.  As part of that I ordered (off ebay) an Optiplex 790 with i5 and 8 of ram running Windows 10 pro.  I added a NVidia 1030 card and also 4TB HD.  It came with a 180GB SSD and 500GB HD. I left the 180 SSD attached.  Prior to changing out parts, I never tested the computer as I did not have a monitor at my home (have been using only laptops for the longest time).  


Anyhow, I ordered a monitor, as also in process of setting up my wife's office.  I got the monitor and connected the computer today and the monitor says no signal.  I tried the DVI and VGA connection as well as the HDMI from the video card.  I have another Optiplex i had ordered from ebay around the same time and it worked fine through the DVI.


I took out the hard drive I added and connected the old one. I also removed the video card.  Still no signal.  I disconnected the DVD and still no signal to monitor.  The computer turns on and the HD spins.  I even tried taking the HD from the other optiplex and using that, but still the monitor does not get signal.


Any suggestions to troubleshoot? I am hoping it is not the GPU. I did email the seller on ebay.  He said it all worked when he mailed it out and he has 100% rating.  He suggested to disconnect the battery supply and hold down power button for 10 seconds to somehow empty capacitors or something then reconnect battery supply.  I am at work tonight but plan to try that in the morning.  Any further suggestions on what I can do to try to troubleshoot the problem?  How do i figure out the issue?  


Of note, I am not hugely computer literate, so that complicates issues 


Anyhow, thanks for your time and help!



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#2 hamluis



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Posted 16 October 2017 - 08:26 AM

No evidence of rreceptivity...with different computer systems...would be all the evidence I needed to say that the monitor is faulty.  That would point to the power brick/extension cord...or the monitor itself.  The cord/power brick are replaceable.  I would ensure that they properly fit by disconnecting/reconnecting and see if there is a change.  The Optiplex should have onboard video, so I would leave the discrete GPU out of all scenarios.


Generally...monitors are plug-and-play.  The fact that the system goes through apparent motions of functioning...have nothing to do with the proper attachment of a monitor, IMO.



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