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Windows 7: BSOD right after login error 0x7f caused by ntoskrnl.exe+7efc0


01 Dec 2012   #1

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 
BSOD right after login error 0x7f caused by ntoskrnl.exe+7efc0

Although i know the cause, i have no clue on how to fix it.


I have tried the following:
Memory scans - nothing there
Disk scans - nothing there
Done startup scans - nothing there
Done cmd scans - nothing there
rootkit scans - nothing there

I have added the rest of the info in the .rar

Any help would be amazing

I am currently in safetymode as normal login does not work. (due to the BSOD)

My System SpecsSystem Spec
.

01 Dec 2012   #2
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

Welcome aboard.

According to Carrona.org, STOP 0x0000007F: UNEXPECTED_KERNEL_MODE_TRAP
Usual causes: Memory corruption, Hardware (memory in particular), Overclocking failure, Installing a faulty or mismatched hardware (especially memory) or a failure after installing it, 3rd party firewall, Device drivers, SCSI/network/BIOS updates needed, Improperly seated cards, Incompatible storage devices, Overclocking, Virus scanner, Backup tool, Bad motherboard, Missing Service Pack

As your dumps are not giving adequate information, We may start with some point.

► Uninstall Daemon tools. It is a well known cause of BSOD crashes.

► Uninstall AVG. Uninstall Norton and all Symentec products too, using Norton Removal tool.Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner. Download and install those, and then run full system scans with both of them, one by one.

► Make some space free in C drive. As it is very little space left there.

► Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight, per RAM module per slot.

Is the computer in warranty? Let us know. Also let us know the results of these steps. If all failed, we will take another way, will think about the device drivers.
My System SpecsSystem Spec
01 Dec 2012   #3

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

I have a 3 year warranty on it.

But i would rather fix it myself, or else it will probably be gone the entire month in repairs.
My System SpecsSystem Spec
.


01 Dec 2012   #4

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Removing daemon tools, avg and Norton changed nothing
Got nothing on the virus scans either


Gonna have to wait a few hours for a friend to come over with the empty CD for the RAMtest
My System SpecsSystem Spec
01 Dec 2012   #5
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

Waiting for the report of memtest.

If it also found nothing, we are to think about the drivers.
My System SpecsSystem Spec
02 Dec 2012   #6

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

The report will be up tomorrow, thanks for your patience
My System SpecsSystem Spec
05 Dec 2012   #7

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Yeah. The RAM test was fine, no errors found

Guess the driver is where the problem is at.
My System SpecsSystem Spec
05 Dec 2012   #8
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

Is there any further crashes during these three days? If so, upload the dumps if they supply any other information.
My System SpecsSystem Spec
05 Dec 2012   #9

Microsoft Windows 7 Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

There has not been any crashes. It only crashes when i start it up without safemode.
My System SpecsSystem Spec
05 Dec 2012   #10
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

If you uninstall Daemon tools, and free up startup, I guess this crash also will not be there.

Free up the startup.
  1. Click on the Start button
  2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
  3. Select the “Startup” tab.
  4. Deselect all items other than the antivirus.
  5. Apply > OK
  6. Accept the restart.
My System SpecsSystem Spec
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 BSOD right after login error 0x7f caused by ntoskrnl.exe+7efc0




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