Hello guys, 
  
I have a Toshiba NB500-100 and I couldn't manage to install ANY of the OS X Versions   
  
I tried with different USB-Sticks, and had problems since the beginning,  
  
- Snow Leopard did not boot, no chance to type anything into the BIOS. 
  
- On Mountain Lion and Mavericks: 
 
  
If I don't press any key, the Apple logo shows and stays like that. 
If I press a key and use either "-v" or "-x", a large log gets displayed too fast for me to keep up, and suddenly the screen turns black. Nothing more happens. 
  
Any help please? Thanks in advance.