[SOLVED] Upgraded PC - Won't post. No display, no power to usb devices

Jan 17, 2019
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First off, I have read ad nauseam many forum posts and articles, to include the "PC will not post" checklist. Here is my situation.

Old Build:

MOBO - MSI Gaming M5 Z170A
CPU - i5 6600k
GPU - Asus Strix 980 ti
RAM - Corsair Dominator 16GB (2x8GB) DDR4 3,000hz
PSU - EVGA Supernova G2 - 1,000 watt gold+
Cooler - Noctua NH D-15
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New Build:

MOBO - MSI Meg Z390 Ace
CPU - i9 9900k
GPU - Zotac RTX 2080 ti
RAM - Corsair Dominator 32GB (2x16GB) DDR4 3,466hz
PSU - EVGA Supernova G3 - 1,000 watt gold+
Cooler - Noctua NH D-15

Upgraded GPU, MOBO, RAM, and CPU. Build went as planned, fired up and worked like a dream for ≈24 hours.. Powered through benchmark programs, played games, etc. Suddenly, at a random mouse click the display went black with "no input" and loss of power to usb keyboard and mouse. Hard reboot.. nothing. Swapped displayport for HDMI, hard reboot, and I see the MOBO splash screen, then same result. Black screen, no power to usb devices. I can get into BIOS and everything works and looks as it should.

After trying all the basics, RAM swap, single stick, check all connections, etc. I cleared cmos. PC fired up and worked about 10 minutes then same result. Next, tried repair install of Win 10.. again, computer worked about 10 minutes followed by the same result.

Next I completely rebuilt the pc and swapped out the power supply (EVGA 1,000 watt gold+). Computer fired up and worked for almost two days... upon shutting down, same result.

I have tried literally everything from every troubleshooting list I can find. I filed a claim with Amazon to replace the motherboard and will try that next.

Any suggestions or past experience with this issue? Thanks in advance!

Cheers!
 
Solution
If safe mode works then I think the problem either the hard drive or the software on it.
Setting the ram would only be temporary for testing purposes. Don't do these things at the same time. Test them individually.
Jan 17, 2019
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The screen goes black after I exit bios and attempt to boot, so at that point I can't get back into bios without hard rebooting. I have tried updating bios also with no luck. I have a new motherboard and CPU coming from Amazon, I'm hoping that by swapping them both out that should solve the issue.
 
Do these problems happen in safe mode?
What happens if you take the graphics card out of the build and plug your monitor into the onboard graphics.
Do you still have these issues?
If not, then i'd suspect software/driver corruption with the graphics card.
Also am I correct in stating that you've tried formatting and reloading the operating system? You should have done that right after building your new system. If you didn't you're likely experiencing driver corruption from the previous system.
 
Jan 17, 2019
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Unfortunately, the motherboard doesn't have any display connections so I can't check this. I also did a fresh install of Win 10. The point that really has me stumped is that the system worked for over 24 hours, twice. Ran heavy benchmark programs, played hours of games at ultra settings, downloaded hundreds of GB worth of games overnight, etc. How could it have ran so flawlessly, then returned to the same issue? The only thing I can think of at this point is that the MOBO or CPU are bad.

One aspect that I see pop up from time to time is that the MOBO may not be supplying the correct voltage to the RAM on auto settings and they may need changed. This is an area I am unfamiliar with. I have not overclocked or altered any bios settings.
 
Jan 17, 2019
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I haven't tried safe mode. I'll give that a shot. If it does boot in safe mode, what might that indicate and how can I correct the problem permanently?

As far as a driver goes, when the system had been working I updated and installed all necessary drivers. What additional driver could have installed that caused an issue?

My RAM is rated at 3,466hz. Wouldn't setting the memory to 2666 / 2400 / 2133 be limiting it's potential and nullifying the point of installing faster RAM? I'm a bit uneducated in that area though, so I'm not really sure what I'm talking about here.