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Bluescreen on fresh Windows installation Caused by iocbios2.sys


I have a brand new pc on a fresh windows installation that crashes randomly with the code iocbios 2.sys

It seems to be some intel overclock driver. I have talked with windows support they said i should ask you guys.

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5 Replies

What do i do from here. i cannot remove that driver. And it gets installed automaticly by windows.

Community Manager

Hello Maqzx,



Thank you for joining the Intel Community Support.



If you did not download the the Intel® Extreme Tuning Utility (Intel® XTU) from the Intel® Download Center (, you may have a preinstalled version provided by your system manufacturer.



Please scan your computer using the Intel® System Support Utility to get basic information to address your issue properly. Follow the steps below:


1.Download the Intel® System Support Utility and save the application to your system.



2.Open the application and click Scan to see system and device information. The Intel® System Support Utility defaults to the Summary View on the output screen following the scan. Click the menu where it says summary to change to Detailed View.


3.To save your scan, click Next and click Save. You can save the file to any accessible location on your computer.


4. Attach the report to this thread.



Also, how are you trying to uninstall the utility? Why is it that you cannot remove it from your computer?



Wanner G.

Hi Wanner G.

Thank your getting back to me so quick.

Short resume. Im getting this bluescreen randomly. when opening programs or powering off pc. I used Driver verifier in windows to try to find what driver was causing bluescreens. And when i use driver verifier with iocbios 2.sys on. i get bluescreen instant. If i use the verifier without iocbios 2.sys then it runs fine. So i think that is was causing the blue screens for now.

I did not download the Intel® Extreme Tuning Utility (Intel® XTU). after a fresh windows 10 install it got installed automatically.


Do i even need this driver or what is it for ?.

I try to just delete the folder. But it says the file is in use. And i cannot find any uninstall.exe.

I cannot attach the document in here so i will copy paste the whole thing

# SSU Scan Information

Scan Info:




# Scanned Hardware


BaseBoard Manufacturer:"ASUSTeK COMPUTER INC."


BIOS Version/Date:"American Megatrends Inc. 1101 , 02/27/2018"

CD or DVD:"Not Available"

Embedded Controller Version:"255.255"

Platform Role:"Desktop"

Processor:"Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz , GenuineIntel"

Secure Boot State:"Off"

SMBIOS Version:"3.0"

Sound Card:"USB-lydenhed"

Sound Card:"USB-lydenhed"

Sound Card:"Enheden High Definition Audio"

Sound Card:"NVIDIA High Definition Audio"

Sound Card:"NVIDIA Virtual Audio Device (Wave Extensible) (WDM)"

System Manufacturer:"System manufacturer"

System Model:"System Product Name"

System SKU:"SKU"

System Type:"x64-based PC"

- "Display"

Intel ® Graphics Driver Version:"Not Available"

- "NVIDIA GeForce GTX 1070"

Adapter Compatibility:"NVIDIA"

Adapter DAC Type:"Integrated RAMDAC"

Adapter RAM:"4,00 GB"

Availability:"Running or Full Power"

Bits Per Pixel:"32"

Caption:"NVIDIA GeForce GTX 1070"


Color Table Entries:"4294967296"

Dedicated Video Memory:"Not Available"


Driver Date:"03-23-2018 01:00"

Driver Path:"C:\Windows\system32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvlddmkm.sys"

Driver Provider:"NVIDIA"

Driver Version:""


INF Section:"Section118"

Install Date:"Not Available"

Installed Drivers:"C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c1a085cc86772d3f\nvldumdx.dll"

Last Error Code:"Not Available"

Last Error Code Description:"Not Available"

Last Reset:"Not Available"

Location:"PCI-bus 1, enhed 0, funktion 0"


Microsoft DirectX* Version:"DirectX 12"


Number of Colors:"4294967296"

Number of Video Pages:"Not Available"

PNP Device ID:"PCI\VEN_10DE&DEV_1B81&SUBSYS_85991043&REV_A1\4&56CA552&0&0008"

Power Management Capabilities:"Not Available"

Power Management Supported:"Not Available"

Refresh Rate - Current:"60 Hz"

Refresh Rate - Maximum:"75 Hz"

Refresh Rate - Minimum:"50 Hz"

Resolution:"1920 X 1080"

Scan Mode:"Noninterlaced"

Service Name:"nvlddmkm"


Video Architecture:"VGA"

Video Memory:"Unknown"

Video Processor:"GeForce GTX 1070"

- "Memory"

Physical Memory (Available):"28,63 GB"

Physical Memory (Installed):"32 GB"

Physical Memory (Total):"31,93 GB"

- "BANK 0"

Capacity:"8 GB"


Configured Clock Speed:"3200 MHz"

Configured Voltage:"1200 millivolts"

Data Width:"64 bits"

Form Factor:"DIMM"

Interleave Position:"First position"


Maximum Voltage:"Not Available"

Memory Type:"Unknown"

Minimum Voltage:"Not Available"

Part Number:"F4-3200C16-8GTZR"

Serial Number:"00000000"

Status:"Not Available"


Community Manager

Hello Maqzx,



Thank you for the information provided.



Basically, Intel® Extreme Tuning Utility (Intel® XTU) is a tuning software that allows you to overclock, monitor and stress a system. I checked your system manufacturer's website, and the Intel® Xtreme Tuning Utility came pre-installed. You can see the driver details under the utilities section as IXTU:



Please attempt to remove it by using the Add/Remove program feature in the Windows Control panel.



I also recommend you to contact your motherboard manufacturer to get further information about why this utility is available for your system. Please let me know how you handle this issue.



Wanner G.
Community Manager

Hello Maqzx,



Were you able to successfully remove the Intel® Extreme Tuning Utility (Intel® XTU)?



Please let me know if you need any further help.



Wanner G.