New PC Troubleshooting - Blank Screen

Irenicus

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May 25, 2011
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18,510
Hi Tomshardware,

I recently built a PC with the advice of the people here. As per the title, I have a problem.

The build at first went well, if a little difficult (bruises and cuts, and gods I hate the little front panel to motherboard thing), and I spent a few hours installing drivers on this and that, checked the idle temps which were fine, and started testing load conditions by playing a game for about an hour. In short, it was working. I did things on it.

Then the screen hung. I pressed reset. The PC turned on, off, and on again -- and then stayed on, but the monitor did not react and stayed "blank". All fans were running. Tried turning on and off a few times, the same result.

Ugh.

I went through the following troubleshooting steps:

1) Reseat RAM/GPU - no results
2) Took out CMOS battery, wait a few seconds, put back in (I assumed the whole installing a bunch of motherboard drivers from the manufacturer's website might have done the thing in) - no more turning on-off-and-on, just stays on -- but still black screen
3) Removed the GPU from the equation and ran the screen directly from the motherboard -- no good
4) Did the CMOS battery thing again; left out for a few hours this time -- no luck
5) Removed all connections except motherboard (+ cpu) and PSU itself, linking to the monitor.
6) Using my old computer, tested the RAM, monitor, and PSU. All work just fine. The PSU, moreover, is a gold Seasonic G series. It feels like it should survive an embassy siege.

The relevant culprits are therefore ASROCK Fatal1ty H87 board OR the i5 4670. Or maybe my brand new Corsair 500R case's power button is bad or something (but then it shouldn't have worked before, right?). I do not have any specialized tools to test them. I do not have another Intel board, especially not one for Haswell nor a spare CPU.

Both motherboard and CPU are bought from newegg. Both are still under 30 days.

Two side notes: When I first started the PC for the very first time, it did the on-off-and-on thing, but went on to work perfectly and never did it again despite numerous shutdowns and restarts until the black screen situation. Also, I have only gotten the aftermarket cooler just now, as of this post -- was using the Intel default cooler throughout this PC's young life. Don't tell me I should have waited... :I

P.S. No overclocking involved. Shouldn't have shocked the motherboard with my static either, given that the PC acted up when it was already working, safely guarded inside a mighty Corsair Carbide case.

***

TL;DR isolated the problem to the motherboard OR CPU.

Questions: I beg upon thy kindness -- halp. What are my options? Is there a way to test out which of the two things is the dead one, some sort of motherboard tester or something, or should I RMA both?

And if that's what I have to do (I'm thinking, if I RMA only the more likely culprit, I get to test with one "old" piece before sending it back if necessary), how do I go about RMA'ing with newegg again? Never had to do one before...

And how much do computer shops charge anyway if clients go in with "I troubleshot (?) everything except these two, plz hlp"?

(edits for clarification)
 

Irenicus

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May 25, 2011
12
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18,510
^I honestly have no idea how to do that (as in, bear with the newbie-ness here, how do you turn a "barebones," caseless motherboard on in the first place?), and especially do that without guaranteeing that I really shock the motherboard to death this time (if it's alive).
 

Irenicus

Distinguished
May 25, 2011
12
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18,510
Nope. Not it. Case closed on the case side: it's not the culprit. (And I will never do that again. Christ, that feels dangerous, if not outright stupid, shorting fragile might-have-already-been-broken-but-new pc parts).

Back to my original position: what are my options regarding testing the motherboard and CPU? What is the more likely piece to break? Any experience or clues based on my scenario above? Is it better if I just RMA both?