No Post after black screen.

[LNW]

I posted the other day about my PC black screening after exiting game like BF1 or FH3. As of last night, it seems that it was the last straw. The screens went black when exiting a session, and when I went to restart, they never came back. No post, no beeps, nothing. Everything I've done to test so far: 

 

-unplug both sticks of ram separately

-move each stick of ram to another slot one at a time

-removed cmos battery

-moved gpu to next pci slot

-unplugged all usb devices

-unplugged all sata connections

-unplugged network card

-checked all power supply connections

 

Thankfully I work in IT, and I have access to some spare parts. I will be able to work on it again in two hours after class. The main things I'm thinking are; dead motherboard, dead gpu (output), or dying power supply. Specs are in signature. Any suggestions on what could be causing this? Appreciate it.

 

*Note* This computer worked for two years prior to this set of incidents. *Note*

[Ctown0812]

I would check your power supply using the paper clip trick.  If you're unfamiliar, unplug your psu, grab your 24 pin MB connector, insert a paperclip into the green pin (power) and plug the other end into the black pin (ground), plug your psu back in and turn it on. If it turns on, your PSU isn't the problem. Or since you have access to spare parts, you could try a different PSU. The black screens could indicate that it was in the process of dying.  If the PSU isn't the problem, your MB is probably bad, although my money is on the PSU.  

[LNW]

1 minute ago, Ctown0812 said:

I would check your power supply using the paper clip trick.  If you're unfamiliar, unplug your psu, grab your 24 pin MB connector, insert a paperclip into the green pin (power) and plug the other end into the black pin (ground), plug your psu back in and turn it on. If it turns on, your PSU isn't the problem. Or since you have access to spare parts, you could try a different PSU. The black screens could indicate that it was in the process of dying.  If the PSU isn't the problem, your MB is probably bad, although my money is on the PSU.  

Very familiar. I use that trick to diagnose dead computers at work. But I had thought since it still powers up, but doesn't post, it might not really prove any results? I also wonder if my overclock killed my motherboard. 4.4ghz on a 970 chipset. It's been there since christmas of 2014.

[goodtofufriday]

15 minutes ago, Layne White said:

Very familiar. I use that trick to diagnose dead computers at work. But I had thought since it still powers up, but doesn't post, it might not really prove any results? I also wonder if my overclock killed my motherboard. 4.4ghz on a 970 chipset. It's been there since christmas of 2014.

it wont do much but a dead or dying PSU can cause a computer not to post at all but still "turn on"

[Ctown0812]

4 minutes ago, Layne White said:

Very familiar. I use that trick to diagnose dead computers at work. But I had thought since it still powers up, but doesn't post, it might not really prove any results? I also wonder if my overclock killed my motherboard. 4.4ghz on a 970 chipset. It's been there since christmas of 2014.

I seem to recall an issue with MSI 970 Chipset.  There was a thread on MSI's forums about overheating VRM/MOSFETS.  From what I remember, the PWM would go bad, causing serious heat output, even causing the VRM's to melt in some instances.  My memory is a bit fuzzy, but i'm sure you could find the actual thread with some googling, so your overclock theory might not be too far off.  

[0x1e]

2 hours ago, Ctown0812 said:

I would check your power supply using the paper clip trick.  If you're unfamiliar, unplug your psu, grab your 24 pin MB connector, insert a paperclip into the green pin (power) and plug the other end into the black pin (ground), plug your psu back in and turn it on. If it turns on, your PSU isn't the problem. Or since you have access to spare parts, you could try a different PSU. The black screens could indicate that it was in the process of dying.  If the PSU isn't the problem, your MB is probably bad, although my money is on the PSU.  

A paper clip test only tells you if the PSU turns on. Not if it actually works.

Only way to tell that is to either find a way to put a load onto it, or try another PSU.

[Ctown0812]

12 minutes ago, 0x1e said:

A paper clip test only tells you if the PSU turns on. Not if it actually works.

Only way to tell that is to either find a way to put a load onto it, or try another PSU.

Yeah that's true.  I just assumed that the power supply wasn't doing anything at all and was the source of the problem.  Should've known better.  Lesson learned.

[LNW]

12 hours ago, goodtofufriday said:

it wont do much but a dead or dying PSU can cause a computer not to post at all but still "turn on"

 

9 hours ago, 0x1e said:

A paper clip test only tells you if the PSU turns on. Not if it actually works.

Only way to tell that is to either find a way to put a load onto it, or try another PSU.

 

9 hours ago, Ctown0812 said:

Yeah that's true.  I just assumed that the power supply wasn't doing anything at all and was the source of the problem.  Should've known better.  Lesson learned.

I tested everything at work. The psu tested fine with a tester, and put out the right amount of volts, then proceeded to power the "super computer" at work. Ram was fine and gpu was fine also. Going to assume dead motherboard now. Might end up using this as an excuse to go to intel.