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Windows 7: BSOD on startup - ntoskrnl.exe+6f400

03 Jul 2016   #1

Windows 7 Home Premium x64
BSOD on startup - ntoskrnl.exe+6f400

I've had three BSODs that all say they are caused by this address. They always occur on boot.

The bug check strings have been (most recent first):

My System SpecsSystem Spec
05 Jul 2016   #2

Windows 10 Pro

Please run MemTest86+ to identify any memory errors, if it does not detect any problems please try a clean boot and report back how it goes

BSOD on startup - ntoskrnl.exe+6f400 Diagnostic Test BSOD on startup - ntoskrnl.exe+6f400

Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 7 Forums

Note   Note

MemTest86+ needs to be run for at least 8 complete passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors here. Even a single error will indicate RAM failure.

Make a photo of the result and post it.

If errors show up you can stop the test, remove all sticks but 1 and test this single stick in each slot for 8 passes or until errors show, switch sticks and repeat.
If errors show up and you see them a lot later, no problem, the errors don't affect the test.

BSOD on startup - ntoskrnl.exe+6f400 Diagnostics Test BSOD on startup - ntoskrnl.exe+6f400
 Clean boot

Please try the following:
  • Search msconfig and open it
    • Go to the tab services
    • Check 'hide microsoft services'
    • Uncheck all other services
    • Go to the tab startup
    • Disable everything
  • Click apply and click ok
  • Reboot if asked
See if the problem persist, if the problem does not persist enable in the startup tab in taskmanager 1 item and in the services tab in msconfig also 1 service, reboot and see if the problem persist. Keep doing this until you find the culprit or there is nothing left.
If the problem still persist, try booting in safe mode and see if the problem still persist
My System SpecsSystem Spec
06 Jul 2016   #3

Windows 7 Home Premium x64

Thanks for the reply.

I ran memtest86+ for 12 passes (almost 24 hours) and it found nothing:

I'll run through the clean boot and see what happens. I'm going to reboot a few times for each item as the problem was intermittent. I'll edit my reply when I'm done (or if I find the culprit!).
My System SpecsSystem Spec

06 Jul 2016   #4
Layback Bear

Windows 7 Pro. 64/SP-1

Please don't edit your reply.
Use a new post for your reply.
When you edit a post, axe0 will not be informed you have posted.
My System SpecsSystem Spec

 BSOD on startup - ntoskrnl.exe+6f400

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