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Memory corruption BSODs but passing tests


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#1 Dodgexander

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Posted 16 November 2019 - 03:13 PM

http://speccy.piriform.com/results/ub3EN6vveh1OcYaDOqBO5lr

 

I am at a loss with this, if there's someone to get intermittent BSODs its me! Any help to get me out of this sticky situation would be very kind!

 

In fact, I usually build systems myself and one of the reasons I opted this time to buy a pre-built gaming laptop this time was to avoid these kind of problems...so I don't know if I'm cursed or what.

 

Like most of my computer problems, this is a BSOD that appears sometimes as much as 2 weeks apart.

 

I have, for a few weeks now been doing some testing:

 

1. Memtest86 (passmark, pro version) ran overnight twice with over 8 passes, no errors!

2. Prime95 within Windows, twice for 12h each. Once large ffts, once blend, no errors!

3. HDD smart tests pass, boot SSD seems fine, secondary data HDD passes Seatools long test!

 

The problem started a few weeks ago, I can't think of anything that has changed since then.

 

I have tried re-installing windows.

 

My laptop is still under warranty, but I live in the USA and it was purchased in the UK with a UK warranty so not sure HP will let me return it to the USA again (I actually returned it once already for a keyboard fault)..plus its a pain to return and be without my computer for some time.

 

Does anyone know if HP will send replacement RAM for me to insert myself? If so, how do I prove the fault to them? I'm scared I'll return it, they will test it and find no fault and return...of course, If I can't find a fault its likely they can't either!

 

Thank you!

 

Dodge

Attached Files


Edited by Dodgexander, 16 November 2019 - 03:48 PM.


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#2 PhillPower2

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Posted 16 November 2019 - 03:31 PM

Hello Dodge,

 

After you reinstalled Windows did you reinstall the drivers for the motherboard and starting with the chipset drivers first.

 

Have you checked for any crash dmps.

 

Have you read and understood the Blue Screen of Death (BSOD) Posting Instructions - Windows 10, 8.1, 8, 7 & Vista


PSU guidance - 10 stripe - Johnny Lucky - PC Mech -  PSU Lemon List Which power supply do you need?

 

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#3 Dodgexander

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Posted 16 November 2019 - 03:56 PM

Hello Dodge,

 

After you reinstalled Windows did you reinstall the drivers for the motherboard and starting with the chipset drivers first.

 

Have you checked for any crash dmps.

 

Have you read and understood the Blue Screen of Death (BSOD) Posting Instructions - Windows 10, 8.1, 8, 7 & Vista

Sorry, I thought I had attached my file, but didn't. I've edited the open post to include it now.

 

After re-installing windows I used the HP tool to check for updates and installed the Intel Chipset drivers there. Also installed ME driver and Rapid Storage driver.

 

I have Windbg installed and have checked the crash dumps and I can't see them pointing to a particular driver, only corruption.

 

At first I thought definitely RAM, which is why I performed the tests I did, but no matter what I try I can't fail a RAM test.


Edited by Dodgexander, 16 November 2019 - 03:57 PM.


#4 PhillPower2

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Posted 17 November 2019 - 07:41 AM

Apologies for the delay getting back to you Dodge, work gets in the way sometimes.

 

Going off only the most recent dmp it could still be hardware related so we need to keep this in mind.

 

Couple of things of note, you have high memory usage for a computer that is not under any load and you have Razer drivers installed, we need to find out what is hogging the RAM which we will look at next, I mention the Razer drivers as I have come across a couple of separate cases recently where Razer drivers were having random issues with Windows 10.

 

Memory Usage: 50 %

 

Open Task Manager and check what if anything is shown to be using so much memory


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Due to differing time zones not all of us can always be around at the same time and on occasion there may be a delay between replies.

 

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#5 jcgriff2

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Posted 17 November 2019 - 10:22 AM

Hi. . .

 

The bugchecks on the 3 dumps -

(1) 0x1000007e (0xc0000005,,,) = system thread threw an exception; the exception = 0xc5 = memory access violation

(2) 0x12b (0xc00002c4,,,) = FAULTY_HARDWARE_CORRUPTED_PAGE (12b)

This bugcheck indicates that a single bit error was found in this page.  This is a hardware memory error.

 

The exception error code (1st number inside the parenthesis) -

 


0xC00002C4
STATUS_CORRUPT_SYSTEM_FILE The system file %1 has become corrupt and has been replaced.

 

Return the system if at all possible. Either the RAM is bad or there is an unknown underlying catalyst causing RAM to fail, i.e., not to be able to properly hold kernel code. The unknown failing hardware includes PSU, motherboard, excessive heat, cables, wiring, etc...

 

BSOD dumps are incapable of telling us the exact piece of hardware that is failing as dumps grew out of the need to aid software developers (driver developers too) to "debug" their code. Dumps were not invented for or intended to diagnose hardware problems, so the dump telling us that a "hardware memory error" exists is as close as we'll get to an answer from the dumps.

 

The other possible culprit is your samsung mzvlw256hehp-000h1 SSD drive. SSDs act more like RAM than they do traditional HDDs and therefore a problematic SSD can give off memory related bugchecks. 

 

Also, notice how the word "memory" is used vs. "RAM". There are two types of memory - (1) installed physical RAM and (2) virtual memory - the hard drive's page file which is used in lieu of RAM  when either RAM is exhausted (no more RAM available) or an app writes directly to virtual memory (like Notepad does; same with Sysinternals Process Monitor).

 

So, the reference to "memory" here could mean either RAM (or other underlying unknown hardware failure that is affecting RAM negatively) or possibly the SSD.

 

NT STATUS/Exception error code 0xc00002c4 then may possibly be referring to the SSD and virtual memory; not sure.

 

Check Samsung for a firmware update for your samsung mzvlw256hehp-000h1 SSD - https://www.samsung.com/semiconductor/minisite/ssd/product/consumer/magician/

 

It may be a long shot, but still worthwhile to try.

 

However, with problems like these on a brand new system -- I advise that you do everything possible to obtain a new system from HP. Who knows exactly how deep the problems lay and you could end up with a super problematic system that you'll end up troubleshooting odd problems more than you will using the system for work, school or other legitimate use.

 

My apologies that I could not be more definitive.

 

Regards. . .

 

jcgriff2

 

p.s. I do not know whether HP would ship you a new SSD and new RAM on the promise of you returning the old. Maybe offer to place a credit card on file to make HP more comfortable...? Just a suggestion.

 

Be sure to use a credit card -- NOT a debit card, so if you have to dispute a charge for some reason, you'll have the full weight of credit card law on your side and not just the flimsy debit card law. There is a big difference between the two.

 

EDIT #2 - Run these diagnostic tests for RAM and Hard Drive(s) -

 
 
 
 
 
`

Edited by jcgriff2, 17 November 2019 - 10:55 AM.

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#6 Dodgexander

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Posted 17 November 2019 - 01:34 PM

Thanks guys! Really appreciate it!

 

I'm not sure why my memory usage was so high, perhaps I took the diagnostic when I was using the computer for other means. There's nothing using a lot of memory when I check now in task manager.

 

Last night I ran HCI Memtest for the first time and woke to my laptop freshly restarted, sitting on the log in screen. Event viewer showed another bugcheck and restart, and there's a new minidump included in the attached report. It seems like its another memory-related error.

 

I will uninstall the Razer drivers and see if it changes anything, thanks.

 

I did search for some new firmware for the SSD but its an OEM part so its not compatible with Samsung magician, nor do they release any firmware updates. I am guessing in this case its up to the OEM (HP) to release updates, of which there are none.

 

I fear the worst, I'll have to contact HP again in the USA and ask, they already made an exception replacing my keyboard. HP are pretty clear that you have to purchase global warranties separately, and whilst my laptop isn't in warranty here, it is covered in the UK.

 

Worse case scenario I have to return it to the UK, which will be a nightmare considering the cost of postage, lack of packaging, time and the fact I don't really have any confidence HP will be able to find or repeat this fault and therefore may not repair it.

 

On the other hand, if I somehow get replacement parts to fit myself then I run the risk of it being related to something other than only memory or HDD.

 

There's a couple of other things that I think may also be the cause, the battery within the laptop is rated now as weak, and the laptop just turns itself off when it reaches around 20% left. I know how batteries work, but for the laptop to suddenly shut off like that shows the battery is either completely dead or there's a power supply issue. Annoyingly the battery isn't one of the externally replaceable ones, so I don't know if I can test without it inserted. I've had to combat this by setting it to go into hibernation at 30%, but I never really use my laptop only on battery, so didn't think it could be causing this problem.

 

The other thing was a fault I saw upon return of my laptop previously, the ribbon cable inside the laptop for the left side USB ports was broken at one of the ends where it connects to one socket. Initially upon getting the laptop back I was getting a alert in windows warning about not enough power for the USB ports, I took the laptop apart and re-seated the cable (after noticing it was broken) and the warning and USB has since been working okay.

 

I'll try the suggested tests, maybe running one stick at a time will uncover the problem but its going to take some time to notice it in normal use if the tests don't uncover anything. I'm not so sure I should be taking the laptop apart again though when its in warranty?

 

Very kind for all your help, so thank you again!

 

EDIT* I do have another power supply I can test with the laptop, is it worth trying that too?

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Edited by Dodgexander, 17 November 2019 - 04:06 PM.


#7 PhillPower2

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Posted 17 November 2019 - 02:20 PM

Hello Dodge,

 

No report attached I`m afraid.

 

jcgriff2 has provided any testing info that you need so no need for me to chime in there but for research purposes can you post the model name  or number of the notebook for us if you will

.

As long as you do not brake anything, upgrading the RAM or HDD/SDD will not normally void your warranty but there may be exceptions, if there are service hatches to access the RAM it would be less of an issue but partially dismantling the notebook to gain access for any reason may not fly too well with HP etc.

 

You are welcome btw  :)


PSU guidance - 10 stripe - Johnny Lucky - PC Mech -  PSU Lemon List Which power supply do you need?

 

Due to differing time zones not all of us can always be around at the same time and on occasion there may be a delay between replies.

 

Please note that I do not respond to members who have previously abandoned - not concluded their earlier topics, the assistance here at BC is 100% free, please use this service and not abuse it, knowing the outcome good or bad is valuable information that we all may learn something from. 


#8 Dodgexander

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Posted 17 November 2019 - 04:11 PM

Hello Dodge,

 

No report attached I`m afraid.

 

jcgriff2 has provided any testing info that you need so no need for me to chime in there but for research purposes can you post the model name  or number of the notebook for us if you will

.

As long as you do not brake anything, upgrading the RAM or HDD/SDD will not normally void your warranty but there may be exceptions, if there are service hatches to access the RAM it would be less of an issue but partially dismantling the notebook to gain access for any reason may not fly too well with HP etc.

 

You are welcome btw  :)

I forgot to attach the file again! What a fool! Well its attached to my last post now! Sorry.

 

My laptop is the HP OMEN 17-an018na model with the FHD 120hz 1080p IPS screen, i7700HQ and GTX1060, 256gb Samsung NVME SSD/1TB WD HDD and 2x 8gb DDR4-2400 Samsung memory.

 

I was hoping I'd wake up to a standard memory error in HCI Memtest, but I guess the fact it rebooted during the test only confirms everything I know already..possible fault with hardware be it ram, SSD/HDD, motherboard or even PSU.


Edited by Dodgexander, 17 November 2019 - 04:13 PM.


#9 jcgriff2

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Posted 17 November 2019 - 06:15 PM

The bugcheck on the latest dump -

 

0x50 = invalid memory referenced

 

NO 3rd party driver named which means that we are dealing with unknown hardware failure.

 

The dump gave up no other information.

 

Regards. . .

 

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#10 Dodgexander

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Posted 18 November 2019 - 03:15 AM

Ran seatools in dos after some difficulty getting the computer to see my various USB pen drives. No errors long test on both drives.

Smart test passes on the HDD and self test too.

The SSD smart test and self test are unavailable but I already tested smart test for the SSD in CrystalDiskMark.

Anyway, I took the laptop apart again as there's no easy access slot and decided for testing purposes I'd remove the USB daughterboard ribbon cable that I know has a slightly damaged end... Frayed copper traces to be exact.

The laptop is now running 8 passes of memtest overnight with only one memory module inserted. Next test, probably tomorrow night, will be the other module in the other slot.

Unfortunately one of the case screws was a real pain coming loose when dissembling and I sighed with relief when it finally came free with no case damage, but it's head is basically worn to nothing so I'll need to get hold of some replacement screws for that.

Any idea what size laptop case screws usually are?

Also if I were to replace the broken ribbon cable leading to the USB daughterboard, how can I get the right part?

HP don't have any parts for my laptop when I search the HP part store even though it finds the laptop okay from my serial number...I hoped there would be an easy way to determine the type of cable even if it just means buying a generic, non HP replacement!

#11 jcgriff2

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Posted 18 November 2019 - 08:21 AM

Sorry - I'm not a hardware expert and have no idea what size screws you need or about the USB cable. Try Amazon or Ebay.

 

The extent of my involvement with hardware - replacing a bad laptop HDD and swapping out laptop RAM.

 

Regards. . .

 

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#12 PhillPower2

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Posted 19 November 2019 - 01:22 PM

The laptop is now running 8 passes of memtest overnight with only one memory module inserted. Next test, probably tomorrow night, will be the other module in the other slot.

 

 

 

Test each stick in both slots for at least four or five passes.

 

Just a fyi, testing the RAM can be done without fear of voiding any warranty as that by all accounts has already been done based on certain content in your reply #6

 

The other thing was a fault I saw upon return of my laptop previously, the ribbon cable inside the laptop for the left side USB ports was broken at one of the ends where it connects to one socket. Initially upon getting the laptop back I was getting a alert in windows warning about not enough power for the USB ports, I took the laptop apart and re-seated the cable (after noticing it was broken) and the warning and USB has since been working okay

 

 

it would have been best if you had gotten onto HP regarding this repair, shoddy workmanship on their behalf would have given you some leverage when it came to them putting it right in the US and while they were at it this latest hardware issue.


PSU guidance - 10 stripe - Johnny Lucky - PC Mech -  PSU Lemon List Which power supply do you need?

 

Due to differing time zones not all of us can always be around at the same time and on occasion there may be a delay between replies.

 

Please note that I do not respond to members who have previously abandoned - not concluded their earlier topics, the assistance here at BC is 100% free, please use this service and not abuse it, knowing the outcome good or bad is valuable information that we all may learn something from. 


#13 Dodgexander

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Posted 19 November 2019 - 05:18 PM

it would have been best if you had gotten onto HP regarding this repair, shoddy workmanship on their behalf would have given you some leverage when it came to them putting it right in the US and while they were at it this latest hardware issue.

Yes, well it hasn't been that long since the laptop was returned to them. After return I received a courtesy call from them and I mentioned the complaint with the ribbon cable, so I hope they have record of it.

At the time it didn't seem to cause a problem, so I didn't think anything of it. I had thought it was possibly a driver or windows problem...the USB power message that is.

 

As it stands I've tested both sticks now in their original slots over two nights, the first stick (first slot) passed 8 tests without error, the second stick (second slot) passed 10.

 

Tonight I'll swap the stick into the other slot, test again and the night after tomorrow I'll repeat it.

 

Can't get much more thorough than that!

 

Thanks for your help!



#14 Dodgexander

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Posted 20 November 2019 - 06:19 PM

Okay, so I managed to fit in two tests last night and now have completed them.

 

10 passes with each stick in both slots.

 

Test 1 - Stick 1 in Slot 1

Test 2 - Stick 2 in Slot 2

Test 3 - Stick 2 in Slot 1

Test 4 - Stick 1 in Slot 2

 

So as usual, its not a simply RAM job, it doesn't seem a simple SSD/HDD fault either...and I am left with another stupid intermittent hardware issue that I doubt HP are going to be able to repeat  :smash: 

 

I'm still running with 8gb in slot 2, so I guess I can keep using the PC like this to see if I still get the BSODs, then later try the other stick on its own in the other slot..

 

Thing is, I know how these kind of problems work when it comes to service centres. If they can't find the fault they just won't be able to fix it. I very, very much doubt I'll get a replacement. 



#15 PhillPower2

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Posted 21 November 2019 - 11:31 AM

Once you have finished testing the RAM check the VRAM using MemtestCL 1.00 which you can download from here


PSU guidance - 10 stripe - Johnny Lucky - PC Mech -  PSU Lemon List Which power supply do you need?

 

Due to differing time zones not all of us can always be around at the same time and on occasion there may be a delay between replies.

 

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