O.K., another try to show my problem / ask for help:
I created a live-usb with unetbootin / usb-creator, this time an .ISO of LM13 (Maya), ... again.
But I can't even reach the bootmenu (while booting from USB-Stick).
The PC just freeze with blinking cursor after first status checks of bios and
don't moves on to bootmenu of live-usb.
When I tried to install LM13 a few months ago, the same happend.
But I forgot where I read it, or which forum it was, where I found a solution for this problem,
because I installed "Maya" on my PC with LiveUSB-Stick.
Only remember, changing some lines of a file (maybe ISOLinux.cfg or Syslinux.cfg) on USB-Stick to get it work !?
Is there someone to help me to remember??
Thanks again, greetings,