i got the problem solved:

i tried an other gfx card -> it worked.

i inserted my gfx card again -> it still works!!!!

guess the gfx card wasnt inserted correctly or some loose connection.

nevertheless: it´s working!!! arma3 i am back.

hope for you guys you will get it solved, maybe try an other gfx card or put your out and put it in again :/

sry 4 my bad english :P

i downloaded the actual patch and tried it again. same result :(

but i uploaded the report which was created.

hey Adam, i added all log files i found but thee are no .mdmp or bidmp files.

ok. i tried again to reinstall windows 7 64bit.

this time i unplugged all other hard disks before.

i installed every windows update, actual nvidia driver. after this i installed arma 3 but i still get the same error..............

now i have installed windows 10 -> still not working!

i am not @ home, i will take a look the next week but last time there were only the files which are in the .rar i already uploaded.

maybe its helping that i have the same problem with dayz standalone.

both games are not starting and @ the task manager they are shown as "not responding"

No, only .rpt files and the monetarizedserverscache folder.