Atikmdag.sys BSOD appears on Satellite C850-19Q after Win 8.1 update

Please help.
I have Satellite C850-19Q (PSCBYE-00L00GY4), Windows 8 x64, after i update to 8.1 from store, show me BSOD (atikmdag.sys system_thread_exception_not_handled).
I tried to reinstall windows and again install all driver and updates, nothing changed.
Do you have any suggestions?
Thanks in advance.
Sorry about my english mistakes

> i have windows 8.1 before few months ,normaly update without errors, they work perfect and after windows update my system is crash,
Maybe an further Windows updated muddled up the system. I know that graphic card drivers would be updated also automatically during system update too
Uninstall the graphic card driver from device manager.
Then download the Toshiba driver from Toshiba page and install it.
Then please keep eye on further updates in case graphic card driver would ask for update, ignore this notification.
Of course its only my idea but its worth a try

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Hi Goloono,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
First I would like to reassure you your English was great, I had no problems understanding you.
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HP Drivers & Downloads.
How Do I Find My Model Number or Product Number?
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Please let me know if this has helped.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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