Windows 7: BSOD after win7 updates, ntoskrnl.exe+253d0

Thanks :)
Let us know how things fare.

I'm sorry for the slow reply, but please don't bump the thread.

Now for the dumps.
Both of them are 0xC5, DRIVER CORRUPTED EXPOOL.

The DRIVER_CORRUPTED_EXPOOL bug check has a value of 0x000000C5. This indicates that the
system attempted to access invalid memory at a process IRQL that was too high.

An attempt occurred to touch invalid memory at a process IRQL that is too high. This is almost always
caused by drivers that have corrupted the system pool. If you’ve recently installed any new software,
check to see if it’s properly installed; and check for updated drivers on the manufacturer’s web site.

In our earlier attempt of using Driver Verifier it indicated memory corruption and storage
issues I suggest to run it again using the same settings as in post #2 to see what it comes up with this time.

How old is the HDD and the PSU?
Can you correlate any change made to the PC, be it software or hardware, prior to the BSOD's started?

Thanks for the update :) .

Going through the new dumps I noticed that the vast majority are showing file system activity,
I found that you're using a very old driver that does just that.

Code:

lmvm iaStor
start             end                 module name
fffff880`01002000 fffff880`0111e000   iaStor   T (no symbols)           
    Loaded symbol image file: iaStor.sys
    Image path: \SystemRoot\system32\DRIVERS\iaStor.sys
    Image name: iaStor.sys
    Timestamp:        Fri Jun 05 04:53:40 2009

• Driver Reference Table - iaStor.sys

Please remove intel rapid storage technology.

Arc said:

Get rid of intel rapid storage. First uninstall it from Control Panel > Programs and Features.
Then Uninstall the driver from device manager.

1. Right click on "my computer" icon and click "manage" on the context menu.
2. It will open the "computer management" window.
3. Select "Device Manager" in the left pane, It will list all the existing devices up.
4. Expand "IDE ATA/ATAPI controllers" by clicking on the triangle in front of it.
5. Select one Intel device item under it, right click, uninstall.
6. Continue the process for all Intel items under "IDE ATA/ATAPI controllers"
7. Now restart the computer. At restart, windows will auto configure the appropriate native system driver.

Please remove the Sendori monitoring software.

Code:

c:\program files (x86)\sendori\sndappv2.exe

Scan for possible infection.

• Download TDSS-Killer and scan for rootkits.
• Download Kaspersky Rescue CD and scan for other types of infections. (a how-to tutorial)

Keep us in the know :) .

Thanks for the feedback :) .
You can use a USB thubmdrive (1GB+) to create the Kaspersky Rescue CD, it will even be faster that way :) .

How to record Kaspersky Rescue Disk 10 to an USB device and boot my computer from it?