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I had had having numerous blue screen crashes in the last two weeks which dump indicated was always related to ntoskrnl.exe. The crash would occur at the moment I clicked on something but various programs I was running were involved and not just one.
WHAT I'VE DONE SO FAR: I ran checkdisk, Avast antivirus thorough scan, an anti-malware checker, Windows 7 memory check, then a two-hour memory check downloaded from Lenova, the manufacture of my laptop. No problems were detected by any of these programs.
I went through all the drivers on my system as listed in the device manger and found no cases of red X. (There was one "unknown device" with a yellow exclamation mark. I ran Driver Booster looking for a fix and it updated 10 or so drivers Following that, the same ntoskrnl.exe crash continued so I restored my system from a backup of 11 days ago, which I think was before the problem started. I ran Driver Booster again and it updated 10 or so drivers. Before rebooting, I removed the one unknown driver in device manager with an exclamation mark to see if it would refresh.
After rebooting I got yet another blue screen crash, this time pointing to both ntoskrnl.exe AND a problem with DRIVER_CORRUPTED_EXPOOL caused by tcpip.sys+75822. (Apparently driverbooster had introduced a another problem since I had not seen this error before. Not sure.)
I've been running my computer for 7 hours without a crash, whereas before it would crash every two hours or so. Not sure if I did something to improve it, or if its just part of the randomness. (2 hours after I wrote this, a new crash. See the third dump below titled LAST CRASH.
THREE mini dumps: ================================================== Filename : ntoskrnl.exe Address In Stack : ntoskrnl.exe+74469 From Address : fffff800`0305e000 To Address : fffff800`03645000 Size : 0x005e7000 Time Stamp : 0x54d0317d Time String : 2/2/2015 7:25:01 PM Product Name : Microsoft® Windows® Operating System File Description : NT Kernel & System File Version : 6.1.7601.18741 (win7sp1_gdr.150202-1526) Company : Microsoft Corporation Full Path : C:\Windows\system32\ntoskrnl.exe ================================================== ==================================================
Dump File : 040515-14991-01.dmp Crash Time : 4/5/2015 7:14:44 AM Bug Check String : DRIVER_CORRUPTED_EXPOOL Bug Check Code : 0x000000c5 Parameter 1 : 00000000`00000008 Parameter 2 : 00000000`00000002 Parameter 3 : 00000000`00000000 Parameter 4 : fffff800`03209b15 Caused By Driver : tcpip.sys Caused By Address : tcpip.sys+75822 File Description : Product Name : Company : File Version : Processor : x64 Crash Address : ntoskrnl.exe+74ec0 Stack Address 1 : Stack Address 2 : Stack Address 3 : Computer Name : Full Path : C:\Windows\Minidump\040515-14991-01.dmp Processors Count : 4 Major Version : 15 Minor Version : 7601 Dump File Size : 286,577 Dump File Time : 4/5/2015 7:43:32 AM ==================================================
LATEST CRASH:
==================================================
Dump File : 040515-14086-01.dmp
Crash Time : 4/5/2015 4:02:39 PM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffffa80`0beaf520
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`014c4fb7
Parameter 4 : 00000000`00000000
Caused By Driver : NDProxy.SYS
Caused By Address : NDProxy.SYS+4b0e230
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+74ec0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\040515-14086-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 287,985
Dump File Time : 4/5/2015 4:03:31 PM
==================================================
WHAT I'VE DONE SO FAR: I ran checkdisk, Avast antivirus thorough scan, an anti-malware checker, Windows 7 memory check, then a two-hour memory check downloaded from Lenova, the manufacture of my laptop. No problems were detected by any of these programs.
I went through all the drivers on my system as listed in the device manger and found no cases of red X. (There was one "unknown device" with a yellow exclamation mark. I ran Driver Booster looking for a fix and it updated 10 or so drivers Following that, the same ntoskrnl.exe crash continued so I restored my system from a backup of 11 days ago, which I think was before the problem started. I ran Driver Booster again and it updated 10 or so drivers. Before rebooting, I removed the one unknown driver in device manager with an exclamation mark to see if it would refresh.
After rebooting I got yet another blue screen crash, this time pointing to both ntoskrnl.exe AND a problem with DRIVER_CORRUPTED_EXPOOL caused by tcpip.sys+75822. (Apparently driverbooster had introduced a another problem since I had not seen this error before. Not sure.)
I've been running my computer for 7 hours without a crash, whereas before it would crash every two hours or so. Not sure if I did something to improve it, or if its just part of the randomness. (2 hours after I wrote this, a new crash. See the third dump below titled LAST CRASH.
THREE mini dumps: ================================================== Filename : ntoskrnl.exe Address In Stack : ntoskrnl.exe+74469 From Address : fffff800`0305e000 To Address : fffff800`03645000 Size : 0x005e7000 Time Stamp : 0x54d0317d Time String : 2/2/2015 7:25:01 PM Product Name : Microsoft® Windows® Operating System File Description : NT Kernel & System File Version : 6.1.7601.18741 (win7sp1_gdr.150202-1526) Company : Microsoft Corporation Full Path : C:\Windows\system32\ntoskrnl.exe ================================================== ==================================================
Dump File : 040515-14991-01.dmp Crash Time : 4/5/2015 7:14:44 AM Bug Check String : DRIVER_CORRUPTED_EXPOOL Bug Check Code : 0x000000c5 Parameter 1 : 00000000`00000008 Parameter 2 : 00000000`00000002 Parameter 3 : 00000000`00000000 Parameter 4 : fffff800`03209b15 Caused By Driver : tcpip.sys Caused By Address : tcpip.sys+75822 File Description : Product Name : Company : File Version : Processor : x64 Crash Address : ntoskrnl.exe+74ec0 Stack Address 1 : Stack Address 2 : Stack Address 3 : Computer Name : Full Path : C:\Windows\Minidump\040515-14991-01.dmp Processors Count : 4 Major Version : 15 Minor Version : 7601 Dump File Size : 286,577 Dump File Time : 4/5/2015 7:43:32 AM ==================================================
LATEST CRASH:
==================================================
Dump File : 040515-14086-01.dmp
Crash Time : 4/5/2015 4:02:39 PM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : fffffa80`0beaf520
Parameter 2 : 00000000`00000001
Parameter 3 : fffff880`014c4fb7
Parameter 4 : 00000000`00000000
Caused By Driver : NDProxy.SYS
Caused By Address : NDProxy.SYS+4b0e230
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+74ec0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\040515-14086-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 287,985
Dump File Time : 4/5/2015 4:03:31 PM
==================================================
Last edited:
My Computer
At a glance
Windows 7 Home 64 bit8 megs
- Computer type
- Laptop
- Computer Manufacturer/Model Number
- Lenova
- OS
- Windows 7 Home 64 bit
- Memory
- 8 megs
- Antivirus
- Avast
- Browser
- Firefox