iastor.sys BSOD, Stop 0x0000007E...

Update:

I tried alot of the options that were listed in the last few posts with no success. Every time I would try anything that would try and access the small SSD I would get the iastor.sys BSOD again, very frustrating by the way! From my research on this particular laptop the SSD is very small and not accessible through the OS because it is only used by the OS for certain things to help boot speed and similar tasks.

Since boot speed is not an issue on a non-working computer I decided to try something else. I took the laptop apart and physically removed the small SSD from the computer so when I tried booting it again I would be solely using the the larger main HDD. I put the computer back together and when I booted up it recognized that I had taken out the SSD and it made me convert the sole HDD to a non-RAID drive in the BIOS. I then proceeded to boot to my Win7 clean install DVD. It finally recognized my HDD without the need of an outside driver install via USB, I then deleted the existing partitions created a new partition and then formatted it with the Win7 install. was actually able to go through and do a fresh and clean install of Win7 with any problems. The only thing that I have to do now is go and download all of the hardware drivers that Win7 did not have from the Toshiba website and update them. I am working on that later today, but that should not be a problem. I will see after I get that done if I am going to bother putting the small SSD drive back in or not?? Not sure if I want to deal with that again or not. I will update again as soon as I get everything finished. Thank you everyone for all of the help.

Arc said:

He needs to be able to boot into windows to open the device manager, I think? Here as he says ....

supersport2002 said:

Wouldn't I need to be able to boot into Windows to be able to do a repair install?

@ supersport2002, try to boot into System Recovery Options . Try Safe Mode with Command Prompt. In the command prompt .... enter the command ....

start msconfig

It will open the system configuration window, with the "general" tab selected.

• Click the "startup" tab. Click "Disable all" > Apply > OK.
• Click on "services" tab. Check the "Hide all Microsoft Services"; Click "Disable all" > Apply > OK

Then try to boot again normally. Is it failing still?

If so, boot to System Recovery Options once again. Try Enable Boot Logging. It will create a file named ntbtlog.txt. Collect it and upload it. If you cannot do it within windows, Boot with a live Linux disc (I prefer Puppy Linux for those) and collect it in a USB stick, use the usb stick in another computer and upload it. It is necessary.

The problem was that I had tried to delete the hard drive a few times from the Toshiba recovery tools and received the iastor.sys BSOD before it finished and there was no longer an OS on the computer for me to boot into.

Thanks for your help. I think I found the problem I was having. Within the Device Manager / Storage Controllers I noticed another device other than the Intel Controller. I had installed the SlySoft Virtual Clonedrive for mounting ISO files. Apparently this driver was interacting with the IaStor.sys driver in a way that was causing the BSOD. Haven't had any issues since removing.

Kaktussoft said:

nsteblay said:

I have exactly the same laptop with exactly the same problem.

Things I've tried ...

* Ensure latest Windows Update
* Update the Intel Iastor.sys driver with the latest from Intel
* Systems restore to a very early point in time

If I run SF_Diagnostics and then analyze the dump file using DaRT7 I see that the Iastor.sys driver is what is in memory and active at the time of the crash.

I am not sure what that driver is being used for on this system. This driver is typically used for RAID based systems. It does look like the Samsung supports two hard drives so maybe RAID is supported. It could also be related to the SSD that is incorporated. I don't know.

I may try reinstalling the O/S if I can't get resolution soon.

Nick

Do this #3