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Sudden BSOD and can't post anymore.

A

ATX

Junior Member
Okay this has me stumped.

I recently built a new computer with these parts.

i5 4670K (no OC)
8GB Corsair Vengeance RAM 1666 Mhz
Asus Z87-C
MSI Radeon 7950
Corsair HX-750W (reused but was working in an older system)
Samsung EVO 840 120GB
Windows 7
LG Disk Drive

Worked fine for a month, no BSOD, no issues whatsoever, I played a bit of League on it and some Crysis 3 and it was perfectly fine. Yesterday it suddenly froze, the AMD drivers crashed and it BSOD'ed. From that point on I can't even post.

The fans simply spin up briefly then stop then a few seconds later start up again. I also heard a weird rumbling from the CD drive. I checked every connection they were fine, I re-seated the RAM and GPU.

It now starts up but there's no video output nor can it actually post. The DRAM light is also red.

I tried booting without my GPU but that didn't seem to help, I tried swapping out my RAM for a pair of Corsair Dominators 4GB (I suspect these are faulty), it could boot and almost start Windows but crashes right before the Windows logo comes up.

I was worried about shorts from the motherboard touching the case (750D has no standoffs) but apparently they're built in and the actual board is not touching any metal.

So what do you think it could be?

- Should I RMA RAM, motherboard and PSU?
- I've had one minor issue with the GPU (fan goes to 100% sometimes during gaming) and minor artifacts in one game (Tomb Raider/was OC'ed) but I think the GPU is fine.

Is there any other troubleshooting I should do?
 
ATX said:
Corsair HX-750W (reused but was working in an older system)
Click to expand...

I am unclear cause you asked if you should RMA, is above the PSU you say is old but was working in another system?

My first take would be PSU.

Can you describe the rumbling from the optical drive? Have to tried to disconnect it, as opposed to just checking its connections, and try to boot?
 
Virgorising said:
I am unclear cause you asked if you should RMA, is above the PSU you say is old but was working in another system?

My first take would be PSU.

Can you describe the rumbling from the optical drive? Have to tried to disconnect it, as opposed to just checking its connections, and try to boot?
Click to expand...
It has 7 years warranty and ran perfectly in an older system. But it is nearly 4 years old so it could be faulty.

I can probably take the motherboard and RAM back to the store since they have a 30 day guarantee.

It was odd, lower-pitched rumbling. I disconnected it and tried to boot, nothing changes.
 
ATX said:
It has 7 years warranty and ran perfectly in an older system. But it is nearly 4 years old so it could be faulty.
Click to expand...

Could very well be!

ATX said:
I can probably take the motherboard and RAM back to the store since they have a 30 day guarantee.
Click to expand...

I can feel you want to act on this while you can given it is short, but might be premature if the PSU is going, or this is a RAM issue. Might you have a spare to try?

ATX said:
It was odd, lower-pitched rumbling. I disconnected it and tried to boot, nothing changes
Click to expand...

Thanks for sharing the above, was still worth a try.
 
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ketchup79 said:
If you are now at a point where it will POST, go directly into the BIOS and monitor your temperatures.

According to Corsair, the case does come with standoffs, so if you don't have any between the board and the case, I suggest you get some.

http://www.corsair.com/us/media/cms/manual/OBSIDIAN_750D_InstallGuide_revAB_Web.pdf
Click to expand...
If I swap in some old RAM it will post. But I remember most temps before it crashed.

CPU was mid 30's.
GPU was mid 30's idle, 55-60C under load.

I'll check other temps in the BIOS and post back.

It comes with one but apparently mATX (my board) and ATX don't need them. There are these plastic standoffs built into the tray.
 
ATX said:
If I swap in some old RAM it will post. But I remember most temps before it crashed.
Click to expand...

Does yr RAM comprise two sticks? If so, as I think, have you tried booting with one stick at a time?

Can't recall, did you overclock? I believe you did not say.
 
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Virgorising said:
Could very well be!

I can feel you want to act on this while you can given it is short, but might be premature if the PSU is going. Might you have a spare to try?

Thanks for sharing the above, was still worth a try.
Click to expand...
I guess I'll send in a ticket.

I have a 400W but I don't really trust it as it's a pretty questionable brand PSU I pulled from a Compaq.

Virgorising said:
Does yr RAM comprise two sticks? If so, as I think, have you tried booting with one stick at a time?

Can't recall, did you overclock?
Click to expand...
Yes, tried booting with one stick. Same problem, DRAM light turns red, no POST, everything runs (fans, gpu).

I overclocked the GPU mildly.

960Mhz -> 1Ghz
1250Mhz -> 1325Mhz

Tested in OCCT, stable. No CPU overclock.

I just don't understand how it works properly then suddenly can't even post. The ambient temps were a bit high yesterday (30C)
 
ATX said:
Yes, tried booting with one stick. Same problem, DRAM light turns red, no POST, everything runs (fans, gpu).
Click to expand...

OK, do you mean the new Corsair black RAM or the old RAM? Which RAM let the system POST?

ATX said:
I guess I'll send in a ticket. I have a 400W but I don't really trust it as it's a pretty questionable brand PSU I pulled from a Compaq.
Click to expand...

K.....I know this is anxiety making, but I think a bit more troubleshooting is in order before you RMA everything. Is the old Compaq PSU OEM? If not, what brand is it? When was the last time it worked? Did you experience it working before you pulled it?

ATX said:
I overclocked the GPU mildly.
Click to expand...

Might not hurt to try resetting the above to stock speed and see what happens.
 
Last edited:
Virgorising said:
OK, do you mean the new Corsair black RAM or the old RAM? Which RAM let the system POST?
Click to expand...
Haven't tested both sticks of the old RAM.

Two sticks of the old RAM allows it to post.

Also, USB peripherals only get power with the old sticks. I'm guessing this is because it can actually post?

K.....I know this is anxiety making, but I think a bit more troubleshooting is in order before you RMA everything. Is the old Compaq PSU OEM? If not, what brand is it? When was the last time it worked?
Click to expand...
Actually I just went to find it and realized one of my family members threw it out :|

I might be able to borrow one.

Does the new RAM seem okay to you? My old sticks constantly gave me BSODs in the old computer so I swapped them out. Kinda ironic how they allow me to POST haha

Might not hurt to try resetting the above to stock speed and see what happens.
Click to expand...
I'm actually fairly certain I reset it shortly before the computer died because summer was coming around.
 
ATX said:
Haven't tested both sticks of the old RAM. Two sticks of the old RAM allows it to post.
Click to expand...

Pls give the specs on the old ram.

ATX said:
Actually I just went to find it and realized one of my family members threw it out I might be able to borrow one.
Click to expand...

OK, that's just life, lol

This is starting to feel more like a RAM issue than a PSU issue, at least, to me, tho yr new RAM has glowing reviews, esp compatibility.
 
ATX said:
I'm actually fairly certain I reset it shortly before the computer died because summer was coming around.
Click to expand...

That was very considerate, I get you are not into manic overclocking in general😎.

Did you, as Ketchup79 suggested, now that you can POST, check yr temps in the bios?

And if I had invested in that Haswell system, I would be upset as well, but, just put one foot in front of the other foot re troubleshooting.
 
Last edited:
Virgorising said:
That was very considerate, I get you are not into manic overclocking in general😎.

Did you, as Ketchup79 suggested, now that you can POST, check yr temps in the bios?
Click to expand...
Which temps in particular do you want?

Nah, I don't play anything that needs the power atm. Why create more heat?

Virgorising said:
Pls give the specs on the old ram.
Click to expand...
Corsair Dominators 4GB 1666Mhz CM9 I believe.

OK, that's just life, lol

This is starting to feel more like a RAM issue than a PSU issue, at least, to me, tho yr new RAM has glowing reviews, esp compatibility.
Click to expand...
It was working 100% until this happened.

Like no BSOD, CTD or anything that indicated a RAM problem. But I am pretty unlucky with RAM so I wouldn't be surprised. Do you think I should RMA the RAM out for some new sticks? The motherboard manual lists these sticks as compatible.
 
ATX said:
Which temps in particular do you want?
Click to expand...

All of them.

ATX said:
Like no BSOD, CTD or anything that indicated a RAM problem. But I am pretty unlucky with RAM so I wouldn't be surprised. Do you think I should RMA the RAM out for some new sticks? The motherboard manual lists these sticks as compatible.
Click to expand...

Not sure yet, I think we need to rule out the PSU first. And yes, that is very impressive board, with broad RAM compatibility for sure. But that the old RAM allows the system to POST and the newer, black RAM does not is significant.

Hate for you to have to go thru more trouble, but how much of that would borrowing another PSU to test be?
And, I know how traumatic this is, but it's more the rule than the exception, that before something goes awry, a system appears to be working 100%.
 
Virgorising said:
All of them.

Not sure yet, I think we need to rule out the PSU first. And yes, that is very impressive board, with broad RAM compatibility for sure. But that the old RAM allows the system to POST and the newer, black RAM does not is significant.
Click to expand...
Okay, sometimes it can't even post with the old sticks. Same thing happens as with the Vengenace sticks. But I got in after 5 tries and the the BIOS froze 🙁

CPU - 32C

was all I got before the BIOS froze.

Hate for you to have to go thru more trouble, but how much of that would borrowing another PSU to test be?

And, I know how traumatic this is, but it's more the rule than the exception, that before something goes awry, a system appears to be working 100%.
Click to expand...
Pretty soon I think. I'll post here when I test it.

Not traumatic, just really annoying haha. I can't believe it was normal then can't even post a minute later.
 
ATX said:
Okay, sometimes it can't even post with the old sticks. Same thing happens as with the Vengenace sticks. But I got in after 5 tries and the the BIOS froze CPU - 32C was all I got before the BIOS froze.
Click to expand...

Blech. 5 tries. Well what you were able to get is good news, at least.

ATX said:
Pretty soon I think. I'll post here when I test it.
Click to expand...

Outstanding!

ATX said:
Not traumatic, just really annoying haha. I can't believe it was normal then can't even post a minute later.
Click to expand...

Well, maybe both! Again, esp with a system that good, I think, the sudden, OMG, What?? is a bit traumatic and that is normal. Tho that is usually the way it happens.
Remember, it's a machine, and a complex one with many parts!

I have no clue why you have had back luck with RAM, you choose very fine RAM. Tell me, is the old Corsair two channels and the new 3? Not that it matters much right now, just unclear.

Now, this is starting to feel more like PSU issue again.

Try to relax and chill until the borrowed test PSU arrives.
 
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The stand-offs are built into the motherboard, I confirmed it with Corsair. Only E-ATX requires the extra stand-off.

Anyways my computer started working again after 3 days of inactivity, checked temps, were all good. Browsed the internet, watched a few videos. Then tried to play a game and then it froze and now it can't post yet again. I'm almost certain it has to be the PSU? Everything was perfect until I stressed the system.
 
ATX said:
The stand-offs are built into the motherboard, I confirmed it with Corsair. Only E-ATX requires the extra stand-off.

Anyways my computer started working again after 3 days of inactivity, checked temps, were all good. Browsed the internet, watched a few videos. Then tried to play a game and then it froze and now it can't post yet again. I'm almost certain it has to be the PSU? Everything was perfect until I stressed the system.
Click to expand...

Were it my system, that is where I would start. If that doesn't fix the issue, next I'd remove the video card and try running a few days using the onboard graphics.

Do you have AISuite III installed? If so, it should have a voltage monitoring component which displays the various voltages the power supply is putting out.
 
ATX said:
The stand-offs are built into the motherboard, I confirmed it with Corsair. Only E-ATX requires the extra stand-off.

Anyways my computer started working again after 3 days of inactivity, checked temps, were all good. Browsed the internet, watched a few videos. Then tried to play a game and then it froze and now it can't post yet again. I'm almost certain it has to be the PSU? Everything was perfect until I stressed the system.
Click to expand...

I didn't read the whole thread, but just based on this post I would start with the PSU.
 
ch33zw1z said:
I didn't read the whole thread, but just based on this post I would start with the PSU.
Click to expand...

That was my first take......and then, seeing some of the OMG failure rates posted on Newegg, my second take.

That we now accept failure rates as we do, and having to RMA as we do.....cause all components are made where they are.....bothers me a lot.

Is called OUTSOURCING.

And we let that happen.

Jus venting.
 
Yeah it's annoying as this model was meant to be really sturdy. Japanese capacitors, Gold Power supply and the longest warranty Corsair offers on a PSU I think.

Since my model is pretty old (the original HX) will I receive a HX V2 back or a RM? Or will they just fix it? Cause if it's the former then I'll happily RMA.
 
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