Random crashes, different causes?

So i decided to register in the forum, looking for some expert who helped me to solve my BSOD problem. My CPU has EM64T technology, thus i installed Win 7 x64. I really don't remember if i obtained some BSOD with win 7 x86 before that.

The crash happens whenever it wants, i can't do nothing to "reproduce it". Some times i'm on inet or playing games like GRID. Analyzing the crash dump with windbg, there were different causes each time: like nvlddmkm.sys, ntfs.sys, and others.

What i did is to uninstall my recently added 9400Gt, and since then (5/2/2010) i've obtained only win32k.sys crashes.
I uploaded my minidumps for you to check, hopefully this forum will solve my problem.

*Really don't wanna format yet...

Hi!, and thanks for the reply.

Well, i did what you said: sfc/scannow didn't find anything. I used Seatool for the dignostic of my Seageate Barracuda 7200.9,i ran a few tests, but nothing seemed to be wrong. (the log is uploaded)

I downloaded the memtest86 iso and booted from it. It froze at 86% on the third pass. What could that mean? Also it found around 26 errors.

About the crashes dump: tried to examinate some arguments with the !IRP command, but i'm a newbie on that stuff. Can someone plz help on that??

Well my motherboard has got two slots for RAM, with 1GB each one. Also i keep my old 512x2 modules. So i'll try changing them and running memtest to see how it works.

But appart from that, can someone please look at the crash dump and tell me if it reveal something? I really tried to debug it by myself, but i just found some rare and extrange reports.

thnks a lot.
grx

grx said:

Well my motherboard has got two slots for RAM, with 1GB each one. Also i keep my old 512x2 modules. So i'll try changing them and running memtest to see how it works.

But appart from that, can someone please look at the crash dump and tell me if it reveal something? I really tried to debug it by myself, but i just found some rare and extrange reports.

thnks a lot.
grx

the 13 crash dumps you submitted all show a variety of hardware crashes where the NT kernel has fallen over , the fact it doesn't show a driver as the cause strongly suggests it's hardware so I agree with what J King has said this is going to be your ram

try swapping and changing slots make sure they are clean from dust and make sure your grounded

Has it been this way since you had the ram in place ?

I would try and find some ram that is on your motherboards compatible list

also this driver

Rtnic64.sys fffff880`03f80000 fffff880`03f92000 0x00012000 0x48401957 30/05/2008 15:12:23

is old and needs replacing , I think it is likely a realtek nic driver ?

As JK has stated Memory corruption. There are so many different causes you need to resolve the memory first then we can address the rest.

Ken

Code:

012510-24109-01.dmp    1/25/2010 11:41:05 AM    BAD_POOL_HEADER    0x00000019    00000000`00000022    10000000`00000000    00000000`00000000    00000000`00000000    ntoskrnl.exe    ntoskrnl.exe+71f00                    x64        C:\Users\K\Desktop\Minidump\012510-24109-01.dmp    2    15    7600    
012510-25953-01.dmp    1/25/2010 1:07:37 PM    KMODE_EXCEPTION_NOT_HANDLED    0x0000001e    ffffffff`c0000005    fffff800`02d18aaf    00000000`00000000    ffffffff`ffffffff    fltmgr.sys    fltmgr.sys+4af5                    x64        C:\Users\K\Desktop\Minidump\012510-25953-01.dmp    2    15    7600    
020410-19953-01.dmp    2/4/2010 10:18:59 AM    NTFS_FILE_SYSTEM    0x00000024    00000000`001904fb    fffff880`0769f5b8    fffff880`0769ee10    fffff800`028a80cf    Ntfs.sys    Ntfs.sys+213d8                    x64        C:\Users\K\Desktop\Minidump\020410-19953-01.dmp    2    15    7600    
012610-20687-01.dmp    1/26/2010 2:57:04 PM    CACHE_MANAGER    0x00000034    00000000`00050830    fffff880`02fab868    fffff880`02fab0c0    fffff880`012485a5    Ntfs.sys    Ntfs.sys+15a5                    x64        C:\Users\K\Desktop\Minidump\012610-20687-01.dmp    2    15    7600    
012710-21312-01.dmp    1/27/2010 3:30:43 PM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff960`00103c86    fffff880`035ad070    00000000`00000000    win32k.sys    win32k.sys+c3c86                    x64        C:\Users\K\Desktop\Minidump\012710-21312-01.dmp    2    15    7600    
013010-24875-01.dmp    1/30/2010 5:56:59 PM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff880`0442da65    fffff880`04dc76b0    00000000`00000000    dxgmms1.sys    dxgmms1.sys+2da65                    x64        C:\Users\K\Desktop\Minidump\013010-24875-01.dmp    2    15    7600    
020210-21531-01.dmp    2/2/2010 11:02:57 AM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff960`001b3c86    fffff880`078ec070    00000000`00000000    win32k.sys    win32k.sys+c3c86                    x64        C:\Users\K\Desktop\Minidump\020210-21531-01.dmp    2    15    7600    
020410-21656-01.dmp    2/4/2010 7:55:21 PM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff800`02b9956d    fffff880`022a8740    00000000`00000000    ntoskrnl.exe    ntoskrnl.exe+71f00                    x64        C:\Users\K\Desktop\Minidump\020410-21656-01.dmp    2    15    7600    
020510-37765-01.dmp    2/5/2010 1:44:35 PM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff960`00088175    fffff880`0378f700    00000000`00000000    ataport.SYS    ataport.SYS+cb34                    x64        C:\Users\K\Desktop\Minidump\020510-37765-01.dmp    2    15    7600    
020710-21187-01.dmp    2/7/2010 5:22:06 PM    SYSTEM_SERVICE_EXCEPTION    0x0000003b    00000000`c0000005    fffff960`000dfb75    fffff880`0643e600    00000000`00000000    win32k.sys    win32k.sys+1fb75                    x64        C:\Users\K\Desktop\Minidump\020710-21187-01.dmp    2    15    7600    
012210-35812-01.dmp    1/22/2010 2:02:26 PM    PAGE_FAULT_IN_NONPAGED_AREA    0x00000050    fffff8a0`45cbbdf8    00000000`00000000    fffff800`0289db7b    00000000`00000005    Ntfs.sys    Ntfs.sys+19700                    x64        C:\Users\K\Desktop\Minidump\012210-35812-01.dmp    2    15    7600    
012810-25640-01.dmp    1/28/2010 12:52:25 PM    PAGE_FAULT_IN_NONPAGED_AREA    0x00000050    fffff980`2fb80058    00000000`00000000    fffff880`01216340    00000000`00000002    ntoskrnl.exe    ntoskrnl.exe+71f00                    x64        C:\Users\K\Desktop\Minidump\012810-25640-01.dmp    2    15    7600    
013110-25937-01.dmp    1/31/2010 6:40:05 PM    PAGE_FAULT_IN_NONPAGED_AREA    0x00000050    fffffa81`837c0000    00000000`00000000    fffff880`0f0f2cf7    00000000`00000005    nvlddmkm.sys    nvlddmkm.sys+1eae45                    x64        C:\Users\K\Desktop\Minidump\013110-25937-01.dmp    2    15    7600

Wow thanks a lot for all the responses.

It's definitely not a compatibility problem. I've used the pc for more than a year with the same hardware config. The only thing i changed recently was my graphics card (upgraded from geforce 7100gs to 9400gt, obviously with the latest drivers), but i removed it in order to check if that was the cause.

So when i do the tests with the ram i'll post the results here...

Hi again, here is what i did:

First, i removed one of the 2 modules, leaving an empty slot. I ran memtest (3 passes) and it didn't show any error.
Then i removed the left module and i put the other in the SAME SLOT. When i ran memtest, it froze on the first pass, showing near 4 errors, thus i deduced that it was defective.
Finally i put the good one on the first slot, and in the other i put my old 512mb module: Ran memtest, 5 passes, no errors.

Now i have 1,5Gb RAM and, at the moment, no BSOD has ocurred. So i just have to wait a few days to consider my problem solved.

I just can't imagine what could have incited my RAM to fail like that. I had used it for too long without any problem. Was it maybe a PSU watt problem? I really didn't know the specs of my PSU when i installed the 9400gt.

thanks a lot
grx