Hi Andy,
Both of the attached DMP files are of the MEMORY_MANAGEMENT (1a) bug check.
This indicates that a severe memory management error occurred.
BugCheck 1A, {41793, fffff680095c19d0, 2, 1}
- The 1st parameter of the bug check is 41793 which indicates an unknown memory management error occurred.****
3: kd> dt nt!_MMPFN fffff680095c19d0
+0x000 u1 : <unnamed-tag>
+0x008 u2 : <unnamed-tag>
+0x010 PteAddress : (null)
+0x010 VolatilePteAddress : (null)
+0x010 Lock : 0n0
+0x010 PteLong : 0
+0x018 u3 : <unnamed-tag>
+0x01c NodeBlinkLow : 0
+0x01e Unused : 0y0000
+0x01e VaType : 0y0000
+0x01f ViewCount : 0 ''
+0x01f NodeFlinkLow : 0 ''
+0x020 OriginalPte : _MMPTE
+0x028 u4 : <unnamed-tag>
It appears the data structure for the PFN database is zeroed out, which usually indicates corruption.
I've checked your loaded modules list and it's pretty clean, I see no mention of any 3rd party software that usually raises red flags for memory corruption. Just to be sure though before I recommend hardware diagnostics regarding memory, let's enable Driver Verifier:
Driver Verifier:
What is Driver Verifier?
Driver Verifier is included in Windows 8, 7, Windows Server 2008 R2, Windows Vista, Windows Server 2008, Windows 2000, Windows XP, and Windows Server 2003 to promote stability and reliability; you can use this tool to troubleshoot driver issues. Windows kernel-mode components can cause system corruption or system failures as a result of an improperly written driver, such as an earlier version of a Windows Driver Model (WDM) driver.
Essentially, if there's a 3rd party driver believed to be at issue, enabling Driver Verifier will help flush out the rogue driver if it detects a violation.
Before enabling Driver Verifier, it is recommended to create a System Restore Point:
Vista - START | type rstrui - create a restore point
Windows 7 - START | type create | select "Create a Restore Point"
Windows 8 - http://www.eightforums.com/tutorials/4690-restore-point-create-windows-8-a.html
How to enable Driver Verifier:
Start > type "verifier" without the quotes > Select the following options -
- Select - "Create custom settings (for code developers)"
- Select - "Select individual settings from a full list"
- Check the following boxes -
- Special Pool
- Pool Tracking
- Force IRQL Checking
- Deadlock Detection
- Security Checks (Windows 7 & 8)
- DDI compliance checking (Windows 8)
- Miscellaneous Checks
- Select - "Select driver names from a list"
- Click on the "Provider" tab. This will sort all of the drivers by the provider.
- Check EVERY box that is [B]NOT[/B] provided by Microsoft / Microsoft Corporation.
- Click on Finish.
- Restart.
Important information regarding Driver Verifier:
- If Driver Verifier finds a violation, the system will BSOD.
- After enabling Driver Verifier and restarting the system, depending on the culprit, if for example the driver is on start-up, you may not be able to get back into normal Windows because Driver Verifier will flag it, and as stated above, that will cause / force a BSOD.
If this happens, do not panic, do the following:
- Boot into Safe Mode by repeatedly tapping the F8 key during boot-up.
- Once in Safe Mode - Start > Search > type "cmd" without the quotes.
- To turn off Driver Verifier, type in cmd "verifier /reset" without the quotes.
・ Restart and boot into normal Windows.
If your OS became corrupt or you cannot boot into Windows after disabling verifier via Safe Mode:
- Boot into Safe Mode by repeatedly tapping the F8 key during boot-up.
- Once in Safe Mode - Start > type "system restore" without the quotes.
- Choose the restore point you created earlier.
How long should I keep Driver Verifier enabled for?
It varies, many experts and analysts have different recommendations. Personally, I recommend keeping it enabled for at least 24 hours. If you don't BSOD by then, disable Driver Verifier.
My system BSOD'd, where can I find the crash dumps?
They will be located in %systemroot%\Minidump
Any other questions can most likely be answered by this article:
http://support.microsoft.com/kb/244617
Regards,
Patrick