i wrote the solution on my blog. i hope help.

http://www.orhangazi.info/2015/03/dayz-instruction-at-0x00540680.html

@orhangazi

^^You loose alot of stability and switchable grphics options that leashcat provides, there is a better way to solve problem that worked for me

Remove Leashcat video card drivers for Intel and AMD using DDU http://www.wagnardmobile.com/DDU/ddudownload.htm

Then, rollback to an older Leshcat driver, anything older than the new OMEGA drivers will do. IMPORTANT! ONLY INSTALL THE INTEL DRIVER FROM LEASHCAT. DO NOT INSTALL THE AMD DRIVER FROM LEASHCAT. ONCE IT INSTALLS THE INTEL ONE AND RESTARTS, JUST EXIT OUT OF AMD INSTALLATION WINDOW!!

And then, download this driver from AMD:

-32 bit : http://support.amd.com/en-us/download/mobile?os=Windows+7+-+32
-64 bit : http://support.amd.com/en-us/download/mobile?os=Windows+7+-+64

• Even though these are for Enduro only, if you follow steps correctly it will work.

Install the offical Mobilty Radeon AMD Driver.
RESTART!!!

TAA-DAA!!!!
Not only will DayZ now work, but the Intel-AMD intercation is on par with the stbility provided by Leashcat. I don't know why this works, but I'm gonna assume most of Leashcat's stibility programming goes into changing the intel drivers.

YOU CAN NOW USE SIWTCHABLE GRAPHICS LIKE B4 AND STILL PLAY DAYZ YAY!!!

:D

@mahavb15 thanks your notification man :)

thanks! i will try now!

resolved!!
thanks!

Hello lovesb777 and thank you for the report.
We are glad to hear that the issue has been resolved and I am going to close the ticket in that case. Feel free to submit another ticket in case the issue re-appears.
Regards,
Geez