Lenovo 3000 n500

Hi!
I have tried the iATKOS DVD i5 1.5.5. Everything seems to install OK but when I reboot I only get the prohibited sign http://sblinux.org/grafx/prohib-60px.png

Spec:
Processor (CPU): Intel® Pentium® Dual Core T3200
Processor internal clock speed: 2.0GHz
Front Side Bus: 667MHz
Graphics chipset: Intel Graphics Media Accelerator 4500M
Audio chipset: Conexant CX20561-12Z
Wireless standard: Intel WiFi Link 5100AGN
Network card: 10/100 Ethernet
Ports: 4-1 digital media reader (SD/MMC/MS/XD)
Display port
HDMI
4 USB 2.0
RJ-11
RJ-45

Should I try an older distro? Kalaway 10.5.2? JaS 10.4.8?
Thanks!