Blue Screen error; BCCode:1a

Question

A few weeks ago, my computer (2009 HP, Vista operating system) started freezing. When I rebooted it, it was fine. Then, it started getting blue screen errors. Again, it rebooted fine. I ran Check Disk, Memory Diagnostic, they showed no problems. I checked for driver updates and it said that they were updated. Then, it had trouble restarting, ran Startup Repair, ended up doing a System Restore to an earlier version. That worked for a while, then on Sunday it was unable to start up or repair startup. System Restore did no good. I had the hard drive replaced and a new operating system (Windows 7) installed. It worked fine until today, when it started crashing again. Now I'm getting a similar error (BCCode, BCP1, and BCP2 are the same as the previous errors; the rest are different).

I received the following error:

Problem signature:

  Problem Event Name:                        BlueScreen

  OS Version:                                          6.1.7601.2.1.0.256.1

  Locale ID:                                             1033

Additional information about the problem:

  BCCode:                                               1a

  BCP1:                                                    0000000000005003

  BCP2:                                                    FFFFF70001080000

  BCP3:                                                    0000000000000A20

  BCP4:                                                    00000A5000001450

  OS Version:                                          6_1_7601

  Service Pack:                                       1_0

  Product:                                               256_1

Files that help describe the problem:

  C:\Windows\Minidump\091614-16863-01.dmp

  C:\Users\Owner\AppData\Local\Temp\WER-51043-0.sysdata.xml

dmp files are here:

https://onedrive.live.com/redir?resid=20F6BA7CBA8C1398!110&authkey=!ABGiKUr2bFC2xXY&ithint=folder%2cdmp

Answer 1

Hi,

MEMORY_MANAGEMENT (1a)

This indicates that a severe memory management error occurred.

BugCheck 1A, {5003, fffff70001080000, a20, a5000001450}

• The 1st parameter of the bug check is 5003 which indicates the working set free list is corrupt.

1. Remove and replace avast! with Microsoft Security Essentials for temporary troubleshooting purposes as it's likely causing conflicts:

avast! removal - http://www.avast.com/uninstall-utility

MSE -  http://windows.microsoft.com/en-us/windows/security-essentials-download

2. wdcsam64.sys is listed and loaded which is the Western Digital SES (SCSI Enclosure Services) driver. Please remove this software ASAP as it's very troublesome and is also not necessary to the functionality of your system.

Regards,

Patrick