Okay well that's pitty...but that's life.
i'll move forward and claim for revision.
Thank you for your support!
so since last time i've reinstalled both the hotfix 2.7.603 / 703 also the Asus System Control Interface V3.
absolutely no change...no left shift no fn keys...then following the suggestions from user support i'…
Bios is up to date ver. 315
I've done the reset to default, too
I've downloaded both Hotfixes from Asus and tried to reinstall them, but it only told that the driver is up to date no futher action needed.…