iso instalation problem

I’ve got an installation problem - after burning iso image into cd and booting from it RouterOS says:
loading linux…
loading drivers
found hard drive C

ERROR - NO PACKAGES FOUND
PRES ENTER TO REBOOT

I’ve tried three different versions of RouterOS (incl. 3.0) and three different hardware configuration (Opteron 64bit, Athlon 2700+ and Athlon 900) - no luck. Always the same problem. Unfortunately Google does not have an answer for it. What am I doing wrong?

Perhaps your burned ISO file is corrupted. I’m just guessing.