[Help] Diagnose System Crash to Black/Grey/Blue Screen - Tea Spill Accident PSU?GPU?Mobo?

Brok3nGun

Commendable
Apr 30, 2016
2
0
1,520
Howdy everybody!

1st time poster, big time lurker. Hope you can help me, thanks in advance!

Symptoms:
Computer Randomly crashes to Black, Grey, and sometimes Blue screens. Audio continues for a good while before stuttering and then looping. This is intermittent and can happen while working in Maya, or literally nothing running besides one NetFlix window. The most my machine has ever crashed is 3 times in one day, some days I get by with no crashes, but it's pretty frequent. Hard reboot temporarily fixes the problem, and computer continues on it's merry way. There are no warning signs... no over heats or logs I can find. (Now I know most of you will start saying GPU at this point, but please continue to read)

Observations:
- My PSU fan is no longer spinning. Now this is a "feature" of the Corsair RM 750 as it stays idle till it hits 40% load, however while running Prime95 and FurMark at the same time the fan still will not kick on. Which makes me feel like the PSU is faulty.
- Once my computer was crashing to a Blue screen and then for the first time ever (today) it came back. However this time it could not Identify the videocard inside (a Nvidia 750Ti). I rebooted the machine and it Identifies it however, there is a grey "do not enter" looking sign over it on the Nvidia Geforce Experience window. (? - I wonder if my V-Card is compromised now)

Hypothesis:
My PSU could be faulty and not dishing out the goods to my V-Card and it's crashing from Wattage withdrawal

Diagnosis/Tests:
-I've run FurMark under every combination known to man and my V-Card never got above 52 degrees and passed with an average score.
-I've run Prime with 0 errors, and while FurMark was running to try and pull more watts to get the fan spinning (it did not...but no crash either).
-I've Run MemTest86 and IntelProcessorDiagnosticTool and both passed with flying colors

(?)Question: Why is my PC passing these tests and not crashing?

The Smoking Gun:
Earlier this month I spilt about a pint of unsweet tea through my top exhaust port in my PC. I immediately shut it off, unplugged it, flipped it upside down, drained it, blew compressed air into it, let it air dry under a hot lamp for 2.5 hrs. After using Asrock's mother board testers and diagnostic tools and having to reflash my Bios...my computer ran great for several weeks before these problems started occurring. Something in that Tea has comeback for revenge, and it's not pretty.

System Specs:
-CPU: Intel Core i5-4690
-GPU: GeForce GTX 750 Ti
-PSU: Corsair RM 750
-MOBO: ASRock z97 Extreme 6
-RAM: 32 GB of G.Skill Sniper DDR3
-HDD: Seagate Hybrid Drive 1TB
-Case: Antec 900

Whats Next?
Will reRun ASRock motherboard tests to make sure a capacitor didn't die and will swap out PSU for an old 650w one for a week and see if the problem persist. Will come back with reports.
 
Solution
swapped out the PSU with an old one,

Fixed;
-GPU not reading correctly

Other Changes:
-Crashes extremely reduced (only 1 in two days)
-When crashing, the restart button works and I no longer have to hard reboot the computer

Conclusion:
Replacing the PSU and GPU ... going to say it was 90% the PSU failing , swapping out the GPU to cover all my bases .. will run this GPU for 2 more days to see if it crashes again.

Brok3nGun

Commendable
Apr 30, 2016
2
0
1,520
swapped out the PSU with an old one,

Fixed;
-GPU not reading correctly

Other Changes:
-Crashes extremely reduced (only 1 in two days)
-When crashing, the restart button works and I no longer have to hard reboot the computer

Conclusion:
Replacing the PSU and GPU ... going to say it was 90% the PSU failing , swapping out the GPU to cover all my bases .. will run this GPU for 2 more days to see if it crashes again.
 
Solution