solved by myself - seemed like the MB couldn't provide exact voltage for OC Chip from time to time -> adjustet Voltage -> everything is fine now

memtest no errors
stresstest no errors

didn't made screens

memcheck
*done*

BSOD still appears from time to time - sometimes after enter password on windows login; sometimes error occurs without any clue why; mostly happens during closing or opening a...

DDU
*done*
massive problems during installing new driver (some BSOD with same error during several restarts)
new AMD driver
*done*
some BSOD during a bunch of starts
UPDATING old drivers...

hi out there

BSOD as postet above. Occurs from time to time while gaming or tabbing while gaming (especially guildwars 2). Occurs also sometimes on startup (after login into windows). Mostly...