hi artur-pt!
Yes you're right about HD3000, my bad !
I've already followed that guide, but sadly the install USB is stuck on DSMOS has arrived, which means this is a graphics problem. When I use the original kexts, I get a white screen then reboot. So I delete the IntelHD* kexts, but then it is stuck at DSMOS. :/
Do you have any ideas?
Thanks