No video displaying, tried everything

Caio Khauam

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Mar 17, 2015
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So... Since December 2017, my computer is not showing video after I accidentally touched my TV antenna cable at the back of my case while moving it. It threw the cable away even tho the case was closed it touched the metal part on the back.
I tested my ram, graphics card and psu at a friend's computer and it was working, on my cpu it was too, leds working, fans working, just no video, so I tought I might had burned only the video part of the mobo, even tho even my GPU had it fans running. Tested the hdmi cable on my ps4 on the same TV port, pretty much was working, I was pretty sure I had burned my mobo somehow with the static, thing is, I did buy a new mobo, which when arrived had the same trouble, all working no vídeo at the beginning, so I thought it was damaged, I even took to an assistance in my town, even though I had 2 gpus and processors to try. He thought it was the mobo too, for even his video card got no vídeo. So I asked for a refund on the mobo, ok I got my money, sent it back and all, but once it did get there, the guy came and said it was working, that it should've been some component here, for me to look for it, he even sent pictures from the store and a video. To resume the thing, I ended up buying a new psu, thinking it was old so it may not have been delivering enough power since it was not the mobo, I ended up buying another processor since it was not the mobo or the psu or the GPU or ram, even tho I had 2, I basically have 3 processors now lol, and still no video. Since it's not the hdmi cable or the TV either, I tried changing the power cord too.

My question is, could it be that after that shock my PC case is not sending enough power at turn on to show video even tho my GPU had her fans working and all? Cause like I got not even a clue anymore on what it could be, I basically replaced and tested my entire building and I still can't get a video from it. The only thing I did not replace was my pc case and my house wiring lol, if you guys say it could be the pc case, it would be a relief, cause better trying another case than the house wiring. But I don't think it's the wiring either since my ps4 works just fine on the same wall socket. My only hope could be the pc case or if you guys have any ideas. Just to cover all of this I also tried cleaning the ram contact and putting one at a time, I even tried both hdmi and vga. I swear I covered all bases lol. And my PC is not old or anything, I bought it in the middle of the last year '-' any help would be awesome.

Edit 1: just so you guys have sure I covered all bases. I also did grounded myself while dealing with these things to make sure it had no more energy trouble before I finished. This is my 5th build. It was not my first time dealing with pc components or anything but no idea why it happened truly.
 
If you can, try to run a different system on your TV, other than the PS4. Perhaps a friend's system, or if you've still got any of your older systems, then one of those. You really seemed to have eliminated the system as the problem, so it's not leaving us with much to work with. Maybe the IO shield was damaged due to the antenna, have you tried changing the IO shield?
 

Caio Khauam

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Mar 17, 2015
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On the other mobo, it had another I/O shield, so I tried on both but a computer does work without a I/O shield tho lol, I don't have another one I can boot right now, my sister is sending me her old notebook tho, have to wait to arrive. But not only the ps4 but also the ps3 works on the socket and both were turned on at the same time with the television cause usually I use my Ps Vr to stream pretty much everything I do on hdmi except for my computer due to the fact I can't read chat in games in Psvr it's too blurry on a PC at 1080p. But I even had the computer with only the TV connected and tried both on different sockets, I don't think the difference in power draw would be too much, so that's why I asked if it would be possible to be the power on cable on the pc case not giving enough power to load video even tho it loads the rest of the components when I press it to turn on. It's the only thing I think I didn't tried but I thought I should ask here instead of go buying yet another pc component that will simply go to my collection till I ever need to use it again lol, dw the parts are not oxidated either, really I have no clue what it could be lol
 


The power on button doesn't provide any sort of power at all. The power on button only bridges the power on pins present on the motherboard. The motherboard receives power as long as the power supply is on - but the motherboard only starts up when the power on pins are bridged together. The power on button, in fact, can be totally eliminated by shorting the respective power on pins on the motherboard itself. I'm quite sure the power button is not the problem here, but what I'm not sure of is what the problem is. You've clearly tried everything, and at this point even I can't be of further help. Sorry about that.
 

Caio Khauam

Reputable
Mar 17, 2015
90
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4,640
It's ok, thanks, I might do a energy efficiency test on my house wiring then, cause even tho it could be enough to maintain the ps4, it might not be stable at the pc after that incident, but yeah, if I eventually discover what is happening then, I give an update here just in case anyone have the same trouble, but thanks o/