ok, thanks for info master !
Now i have another problem.
I bought SSD drive and cloned hdd data and transfered to ssd using Carbon Copy Cloner.
Tried to boot for the first time - no success.
Code:
boot task failed fsck-safe
Solved by following this guide:
https://www.tonymacx86.com/threads/solved-sudden-unable-to-boot.236168/#post-1620051
But now i have another problem - no sound.
Tried to fix by following this guide: - no success
After running "sudo touch /System/Library/Extensions && sudo kextcache -u /" in terminal i saw lot of errors:
"Kext with invalid signatured (-67062) allowed:..." & etc
What i forgot to mention - now screen brightnes working by pressing F2,F3 (without Fn key) - but yesterday it was not working at all :/