BSOD, 0x0000001a and 0x0000004e

TomR1991 · 11 Oct 2013

Hi all.

I am not particularly computer literate, so you might have to bare with me!

On the 9/10 whilst browsing the web, the system blue screened and presented a 'Memory_Management' error. Yesterday (10/10), having ran fine previously for the whole day the system blue screened again and this time gave a 'PFN_List_Courrupt' error; once again, this occurred whilst I was doing something similarly unintensive.

I ran Memtest over night and there was no errors. But I am not sure where to go from here. Hopefully I have correctly attached the dump files. There are also two earlier dumps from last year - I can't remember what the first one was, but the second one was a result of bad RAM which was subsequently replaced.

Thanks in advance.

YoYo155 · 11 Oct 2013

Hello and welcome to 7Forums :) .

One of the bugchecks is corrupted so no help there, and the other doesn't hold a whole lot of useful information
beside the fact that the graphics drivers were somehow involved (those were the drivers from May before the update).

Please run Driver Verifier and crash the machine for a couple of times, then post back with the results.

Arc said:

Information

Why Driver Verifier:
It puts a stress on the drivers, ans so it makes the unstable drivers crash. Hopefully the driver that crashes is recorded in the memory dump.

How Can we know that DV is enabled:
It will make the system bit of slow, laggy.

Warning

Before enabling DV, make it sure that you have earlier System restore points made in your computer. You can check it easily by using CCleaner looking at Tools > System Restore.

If there is no points, make a System Restore Point manually before enabling DV.

Tip

If you fail to get on the Desktop because of DV, Boot into Advanced Boot Options > Safe mode. Disable DV there. Now boot normally again, and try following the instruction of enabling DV again.
If you cannot boot in Safe mode too, do a System Restore to a point you made earlier.

Please enable driver verifier following this TUTORIAL | But using these settings:

Go to Start and type in "verifier" (without the quotes) and press Enter
Select "Create custom settings (for code developers)" and click "Next"
Select "Select individual settings from a full list" and click "Next"
Select everything EXCEPT FOR "Low Resource Simulation", "Force Pending I/O Requests", "IRP Logging" and click "Next"
Select "Select driver names from a list" and click "Next"
Then select all drivers NOT provided by Microsoft, Unknown, or Macrovision and click "Next"
Select "Finish" on the next page.

TomR1991 · 11 Oct 2013

Should I "add currently not loaded drivers to the list"?

YoYo155 · 12 Oct 2013

No need to do so unless you're suspicious about a particular device driver that recently changed :) .

TomR1991 · 12 Oct 2013

YoYo155 said:

No need to do so unless you're suspicious about a particular device driver that recently changed :) .

OK. :)

I will update you whenever I get a crash.

EDIT: Almost as soon as I posted this it crashed. Will wait to see if it happens again.

YoYo155 · 12 Oct 2013

Thanks for the update :) ,
a couple more will hopefully provide enough information.

TomR1991 · 13 Oct 2013

YoYo155 said:

Thanks for the update :) ,
a couple more will hopefully provide enough information.

OK, I have three crash dumps for you.

While I am sure there is more to it BlueScreenView is pointing to AVG as the probable culprit - which I did update to the 2014 version in the last couple of weeks. Attempting to run a scan would cause a crash.

In terms of other details, on one of the crashes I was stuck at the 'Windows Error Recovery' screen for a minute or two and couldn't launch into safemode because the keyboard was unresponsive. Also after each crash I have had to remove and insert my USB wireless adapter as well to get it to be recognised.

:)

YoYo155 · 13 Oct 2013

Thank for that :).
Unfortunately we (the debugging community) are experiencing technical difficulties at the moment as there appears
issues with the public symbols server which we are dependent upon in order to read the dump files
in any meaningful way.
As things stand patience must be at the utmost of priority.

Thank you for understanding.

TomR1991 · 15 Oct 2013

I disabled AVG scan's the other day and the system seemed relatively stable (also turned Verifier off) - not that I have been doing much.

But this evening the PC froze while streaming a video and I had to do a forced shutdown. I turned it back on straight away and it simply wouldn't boot - or at least there was nothing on the screen.

YoYo155 · 16 Oct 2013

Thanks for the update :) .

A few things come to mind in that situation, all of the following are taking into consideration
that the display is in a working order.

Bad RAM (possibly slot as well), overheating, failing HDD, failing PSU, bad GPU.

Do you have an idea of any of those (or event another part) you think might be particularly
at fault based on age and past experience?