Hi Aethirius,

please send us a dxdiag report and files from this folder:
"C:\Users\<Name>\AppData\Local\DayZ\"

Pack the files into an archive (7z, zip, rar ...). If the archive is smaller than 5.000KB, you can attach it here.
In case it's larger than that, please try uploading it to a file sharing website and link it here.

For future reports please refer to the "How to guide" http://feedback.dayzgame.com/how-to-user.html

Thank you.
Johnny

Hi Aethirius and sorry to hear about your trouble.
This does not seem to be an issue of DayZ itself but rather a problem with your drivers.
Please try some troubleshooting as described e.g. here http://www.windowswally.com/how-to-fix-windows-8-1-driver_irql_not_less_or_equal-error/ and let me know if it helped.
Thank you,
Andy

Hi,

I recently encountered this error, and amongst other things, it can be a driver issue, but also a software conflict, typically between the app and your internet security suite.

I was able to find a host of possible causes, along with solutions here: https://www.compuchenna.co.uk/irql_not_less_or_equal/ for those individuals that were/are looking for other possible fixes.

Anyway, take care.
Rodger Elliot