preview and exported video have flashing green screen't eve

hello,

 

i have been using premiere on year organizations youtube channel. of late, time export media results in a  green flashing screen mixed video or totally green. have tried exporting in many different formats different encoding , frame rates. @ point, don't try editing , video wont export. times preview gets green screen before export.

 

i have tried clearing cache, choosing different folders export to, different places store cache, , kinds of formatting options.

 

any ideas on happening?

more information needed help... please click below , provide requested information

-premiere pro video editing information faq http://forums.adobe.com/message/4200840

-with version of premiere pro

-with brand/model graphics adapter (ati or nvidia or ???) , exact driver version

-do not count on windows date when comes device drivers

-go vendor site sure have updated driver graphic adapter

•nvidia driver downloads http://www.nvidia.com/download/index.aspx?lang=en-us

•ati driver autodetect http://support.amd.com/en-us/download/auto-detect-tool

-with have updated latest mac or windows operating systems?

--both windows 10 , mac 10.11 el capitan have been known cause problems... operating system?

-with codec details of editing?

-with effects using video?

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