BSOD occours at random several times daily.

The above .dmp reports indicate a hard disk problem; you may have hard disk errors, data corruption, bad/corrupted drivers, a bad connection between the hard disk and motherboard, etc.. It is difficult to ascertain exactly what the problem is without the full reports. Please follow the https://www.sevenforums.com/crashes-d...tructions.html to provide us with those reports.

Thanks, I've followed all the BSOD instructions & same as yesterday when I try to upload files I get an error saying the files are invalid. I'm using winzip to zip them.

Try selecting all files, right click one, and click Send to -> Compressed (zipped) folder

Ok Cheers here you go

Security Software: ??? I recommend either of these two setups:

• Microsoft Security Essentials - Free Antivirus for Windows
  
  
• Good and Free system security combination.

Download and install the security setup of your choice, update the software, and then run a full scan of your system for viruses and malware. If you only install MSE, I would also suggest installing and updating Malwarebytes : Free anti-malware, anti-virus and spyware removal download, but do not start the free trial/full version of Malwarebytes. Run a full scan with Malwarebytes after updating it. Post back the results.


Your errors appear to be hard disk related, but may be related to viruses. See how the above steps go first. Then we can proceed with other steps.

Thanks.

I've already got MSE

I tried running full scan with MAM but each time I got BSOD !

However both times it picked up same threat quickly.

I did quick scan, details attached.

I would suggest starting a thread in System Security - Windows 7 Forums and posting that same log. If you have already deleted it off your system, you can always download it from this thread and then attach it to your new thread in that forum. The experts there should be able to help you clean up the trojan issue and give recommendations regarding security to combat the breach that trojan may have created on your system.

Ok thanks I've removed the Trojan now. I had originally changed back to my old video card because I thought that might be the problem. I've now reinstated the Nvida card that came with the HP workstation & connected up 2 monitors. I'm still getting BSOD but with different error messages now.

Crash Dump Analysis
Crash dump directory: C:\Windows\Minidump

Crash dumps are enabled on your computer.


On Mon 07/05/2012 12:17:22 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050712-38562-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x1 (0x7353048A, 0x0, 0x1, 0xFFFFF880046CECA0)
Error: APC_INDEX_MISMATCH
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Mon 07/05/2012 12:17:22 GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: ntkrnlmp.exe (nt!KeBugCheckEx+0x0)
Bugcheck code: 0x1 (0x7353048A, 0x0, 0x1, 0xFFFFF880046CECA0)
Error: APC_INDEX_MISMATCH
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Mon 07/05/2012 11:57:08 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050712-48296-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x1 (0x7FEFDFD47EA, 0x0, 0x1, 0xFFFFF880068AECA0)
Error: APC_INDEX_MISMATCH
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Mon 07/05/2012 11:42:48 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050712-44968-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x1 (0x7FEFF22395A, 0x0, 0x1, 0xFFFFF88005D56520)
Error: APC_INDEX_MISMATCH
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sun 06/05/2012 13:50:38 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-47578-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x1 (0x7707060A, 0x0, 0x10000, 0xFFFFF880029AECA0)
Error: APC_INDEX_MISMATCH
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sun 06/05/2012 13:05:39 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-45828-01.dmp
This was probably caused by the following module: hal.dll (hal+0xDBC6)
Bugcheck code: 0xA (0x200, 0x2, 0x1, 0xFFFFF80002A84F39)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\Windows\system32\hal.dll
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: Hardware Abstraction Layer DLL
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system which cannot be identified at this time.


On Sun 06/05/2012 12:35:27 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-45546-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF80002AD4171, 0xFFFFF880065EC240, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sun 06/05/2012 12:20:51 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-58000-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF80002A9017C, 0xFFFFF88006020240, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sun 06/05/2012 12:07:29 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-57703-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x3B (0xC0000005, 0xFFFFF80002AC917C, 0xFFFFF880067B2AC0, 0x0)
Error: SYSTEM_SERVICE_EXCEPTION
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sun 06/05/2012 09:48:25 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050612-72968-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0xA (0x200, 0x2, 0x1, 0xFFFFF80002AD0F39)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Sat 05/05/2012 16:53:54 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050512-61984-01.dmp
This was probably caused by the following module: ntfs.sys (Ntfs+0x5B68)
Bugcheck code: 0x24 (0x1904FB, 0xFFFFF88003512EE8, 0xFFFFF88003512740, 0xFFFFF80002AF3A11)
Error: NTFS_FILE_SYSTEM
file path: C:\Windows\system32\drivers\ntfs.sys
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT File System Driver
Bug check description: This indicates a problem occurred in the NTFS file system.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system which cannot be identified at this time.


On Sat 05/05/2012 16:19:22 GMT your computer crashed
crash dump file: C:\Windows\Minidump\050512-55171-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x1 (0x776AFC0A, 0x0, 0x1, 0xFFFFF88006549CA0)
Error: APC_INDEX_MISMATCH
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that there has been a mismatch in the APC state index.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.

Please provide us with the full crash reports by following the https://www.sevenforums.com/crashes-d...tructions.html