Gaming computer won't display on monitor after 3 weeks of regular use

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TerrierMac

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Nov 11, 2011
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My friend built a gaming computer three weeks ago, and we were able to easily boot it up and he's been using it to play Call of Duty, Skyrim and other games in high quality since. Yesterday, he left it running with just a few Chrome tabs open, came back to check on it and it appeared to be frozen. No mouse/keyboard movement, and no other screen activity, so he tried replugging in the keyboard and mouse to make sure that wasn't the issue, and then restarted it. When it started up again, it was acting very odd and nothing at all showed up on his monitor. Since then, we have tried removing different components, even all the way down to just motherboard/CPU/PSU, and still cannot get anything to show up on a monitor, through the integrated GPU or his dedicated GPU. There are LEDs on his motherboard that are supposed to describe the issue, and the Boot LED seems to be on most often, but we can't figure out how to troubleshoot because we can't even get to the BIOS without a monitor display. We aren't sure if maybe the motherboard went bad somehow, if it's the power supply, or something else entirely. Any ideas on how we can at least get to viewing the BIOS or troubleshoot this issue? Thanks.

Computer Specs:
MSI B450-A Pro motherboard
Nvidia GeForce GTX 1080 Ti (we swapped in an older video card, and still no display)
AMD Ryzen 7 2700x
16 GB (8x2) GSkill Ripjaws V DDR4 RAM
750W Power Supply, reused from an older computer
SSD with Windows 10 and separate HDD
Monitor can connect with DisplayPort or HDMI (we've tried three separate monitors with both plugins and no display on any of them)
 
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TerrierMac

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I did write it at the bottom, but we have tried three different monitors with DVI/HDMI/DisplayPort and none of it has worked yet.
 
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TerrierMac

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Nov 11, 2011
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No, he used his old one in this build, so we don’t have a replacement to try. Could that be the issue? Shouldn’t it at least display the motherboard BIOS screen if the LEDs and fans are on?
 
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SgtScream

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That's why i'd check the psu by replacing it. If you were able to get to the bios, then the issue would be with either hardware or software associated to the hard drive. If the PSU isn't the problem just make use of the return policy.


 
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TerrierMac

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Nov 11, 2011
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Gotcha. He’s going to try his PSU back in his old PC to see if that still works, and also assemble the motherboard outside of the case to make sure something isn’t wrong there. My guess would be that the motherboard is shorted somehow, it’s just odd that it seems to fire up fine and we just can’t see anything on screen.
 
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SgtScream

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If it was working, I doubt breadboarding would be worth doing until after swapping out the PSU.
 
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TerrierMac

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Nov 11, 2011
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He actually breadboarded it today with different component combinations and got some screens to show up a few times, which is odd. Sometimes the keyboard would work, but once he got to the second screenshot after hitting F2 with the Del/F11 options at the bottom, it didn’t work anymore.

http://
 
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TerrierMac

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He currently has it outside of the case and is deciding if he should just RMA the motherboard and hope that that is the issue.
 
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TerrierMac

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Nov 11, 2011
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Yeah he did, in all different slots. That’s one of the ways he got that screen to finally show up, but it wasn’t consistent at all.
 
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TerrierMac

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Nov 11, 2011
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As I said in the original post, he swapped in his old video card into the new motherboard build and we still had no display, integrated or dedicated.
 
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TerrierMac

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Just an update, my friend RMA’d his motherboard for a new one, and we are still having the same exact issue. Monitor comes on with a black screen but no BIOS, sometimes the VGA error LED is on (although I’ve seen people say that Ryzen’s lack of onboard graphic support can cause that), all fans are spinning. The current GPU works in an older computer, so it seems unlikely that is the issue.
 
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