Q: iastora.sys BSOD

My computer had been running fine until a few days ago.  When I turned on my monitor the screen was frozen, the mouse still moved but couldn't click anything.  I did a hard reboot and the computer came back.  Last night it BSOD on me and gave a iastora error.  Again later it did it again.  Attached is last nights dump file.  Today's dump didn't save.




The attached DMP file is of the DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) bug check.

This indicates that a kernel-mode driver attempted to access pageable memory at a process IRQL that was too high.

A driver tried to access an address that is pageable (or that is completely invalid) while the IRQL was too high. This bug check is usually caused by drivers that have used improper addresses.

4: kd> k
Child-SP          RetAddr           Call Site
fffff880`0e6cae08 fffff800`032db169 nt!KeBugCheckEx
fffff880`0e6cae10 fffff800`032d9de0 nt!KiBugCheckDispatch+0x69
fffff880`0e6caf50 fffff880`015345dc nt!KiPageFault+0x260
fffff880`0e6cb0e0 00000000`00000001 iaStorA+0x635dc
fffff880`0e6cb0e8 fffffa80`1a0348b0 0x1
fffff880`0e6cb0f0 fffffa80`1a030002 0xfffffa80`1a0348b0
fffff880`0e6cb0f8 00000000`00000008 0xfffffa80`1a030002
fffff880`0e6cb100 fffffa80`5aebd6f0 0x8
fffff880`0e6cb108 fffffa80`4fd46980 0xfffffa80`5aebd6f0
fffff880`0e6cb110 fffffa80`19e38008 0xfffffa80`4fd46980
fffff880`0e6cb118 fffff880`015428b1 0xfffffa80`19e38008
fffff880`0e6cb120 00000000`00000018 iaStorA+0x718b1
fffff880`0e6cb128 00000000`00000000 0x18

^^ iaStorA.sys is the Intel RST (Rapid Storage Technology) driver. Update ASAP -



Debugger/Reverse Engineer.

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Check with Gigabyte Support for updates to the chipset drivers, BIOS, and other major drivers.

BiosVersion = F7
BiosReleaseDate = 03/19/2014
SystemManufacturer = Gigabyte Technology Co., Ltd.
BaseBoardManufacturer = Gigabyte Technology Co., Ltd.
BaseBoardProduct = X79-UP4

Gigabyte Support

Gigabyte Downloads

iastora.sys = Intel Rapid Storage Technology driver - See System/Motherboard Maker
and the chipset maker. This driver could have been driven to fault by other programs
such as Symantec/Norton or other 3rd party antivirus programs).

This driver is extremely difficult to install so you need the System/Motherboard Maker's                (for custom built systems) help though you might also ask in the their forums (if any).

Also check the Intel Downloads AFTER checking with the System/Motherboard Maker..

Intel Downloads

More help on installing iastora.sys (similar to iastor.sys) here (check with System Maker/Motherboard Maker first and use this as last resort).


Resolving stop (blue screen) errors in Windows 7 - has a section for if you can or can't start Windows. 

For BlueScreen troubleshooting methods using BlueScreenView and MyEventViewer see my
replies if this thread - top 3 answers (+1 other).

Hope this helps.

Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle - Mark Twain said it right.

Rob Brown - Microsoft MVP - Windows and Devices for IT 2010 - current
Windows Insider MVP 2016 - current

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Views: 60,464 Last updated: May 13, 2018 Applies to: