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Solve : Screens display black after startup, intermittent crashes?

Answer» <html><body><p>Hi, this string of issues started about a week ago, maybe a bit less, and I'll recount it as best I can. It first started as I was trying to play Overwatch (though I don't think it's necessarily specific to that game). My computer started up normally, as did Overwatch. I was even able to connect to a match, but it then crashed me back to desktop during character select or shortly after the match started.<br/><br/>It did this a few times, so I tried updating my graphics card's drivers. When I tried doing so through GeForce Experience, the program wouldn't even start and gave me an error that, for the life of me, I can't remember exactly. Some supposedly missing file, even though it's worked fine in the past. When I tried downloading the drivers directly from the website, I went through the install wizard, and it maybe completed, but at some point my computer froze or the screen went black, I think it froze, and I had to hard restart.<br/> <br/>At that restart, it got <a href="https://interviewquestions.tuteehub.com/tag/stuck-2283098" style="font-weight:bold;" target="_blank" title="Click to know more about STUCK">STUCK</a> at POST, just after the motherboard splash screen. The cursor flashed for a while and nothing happened. It did this for another couple of hard restarts, so I ended up letting it continue that <a href="https://interviewquestions.tuteehub.com/tag/way-246442" style="font-weight:bold;" target="_blank" title="Click to know more about WAY">WAY</a> overnight just to see. When I woke up, it was displaying something like "Operating system can't load" in POST. I tried thinking of what I'd changed recently that might be causing this, and I'd had a cheap USB drive left plugged in that I don't normally, so I unplugged it, in case. That actually seemed to help at first. I was able to start it up normally once or twice, but then it started to get hung up at POST again.<br/><br/>Eventually, I was able to roll it back to a system restore point. But now, when I start up my computer, it gets through the motherboard splash screen, through the POST, shows the "Windows Loading" screen with the whirling dots loading icon, then it <a href="https://interviewquestions.tuteehub.com/tag/either-967193" style="font-weight:bold;" target="_blank" title="Click to know more about EITHER">EITHER</a> starts up as usual (though this seems to be happening less often now) or both of my screens go black.<br/><br/>When they go black, the weird thing is, they still seems to be displaying something. Like, the monitors aren't blank/off, they're displaying black. Sometimes, for a quick moment right after startup, I've even seen my primary monitor flash part of the desktop on a portion of it. And, right now, as I'm typing this on my laptop, I'm watching the wireless internet signal strength taskbar icon (usually on the lower-right of the primary monitor) flash periodically, over and over, on the lower-left of that monitor (while the rest remains black). If I wiggle my mouse, the pointer actually appears while I keep the mouse moving, then disappears again a moment after I stop moving it. Also, if I wiggle the pointer again after it's disappeared, it starts back at the center of the primary monitor, even if I'd moved it over to my secondary monitor.<br/><br/>If my computer is able to start up normally, it might work for a while, maybe even a long while (I was able to have it on for several hours without issue both <a href="https://interviewquestions.tuteehub.com/tag/saturday-637008" style="font-weight:bold;" target="_blank" title="Click to know more about SATURDAY">SATURDAY</a> and Sunday this last weekend, but I didn't try to play any games), but I've also seen it then fail in a couple of other ways. It might either freeze up completely and restart itself after a moment or a while, or it starts lagging terribly slowly (or at least the mouse pointer starts moving very, very slowly) and restarts itself, or I have to hard shutdown it. I'm posting on here now because it just did each of these last two in a row, and is now displaying black as I described above while I type this.<br/><br/>My computer specs, by the way, are (this is by memory and whatever documentation I could dig up, since I can't access my system to confirm):<br/>Windows 8.1<br/>Motherboard: Gigabyte GA-Z87X-UD4H<br/>Graphics Card: GeForce GTX 780 Ti (EVGA)<br/>CPU: Intel Core i7 3.4 (?not sure if this is the correct GHz) GHz<br/>Power Supply: Corsair AX860<br/>RAM: 8 GB<br/>1x SSD (Windows is installed to this one) - can't remember size<br/>1x <a href="https://interviewquestions.tuteehub.com/tag/hdd-479551" style="font-weight:bold;" target="_blank" title="Click to know more about HDD">HDD</a> - can't remember size<br/><br/>I'm leaning toward a video card issue, but that "couldn't load operating system" issue I had at one point prevents me from being certain it's just that. And I don't know how to diagnose/fix either, so...<br/><br/>Here I am now. Thanks for any help!<br/></p></body></html>


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