Installing Lion Freezes At "System Uptime In Nanoseconds = ...."


Hi,
Iam Trying To Install Lion On My PC :
M.B : Gigabyte G41
CPU : INTEL CORE2DUO E7500 @ 2.93 GHZ
GPU : ATI 4670 HD 1GB DDR3
RAM : 2GB
Iam Using rBoot
If I Used Only "-v" Bootflag The Installation Freezes At "Systime Uptime In Nanoseconds = "some numbers" "
And If I Used "-v -x cpus=1 Graphics Enabler=Y Or No" It Freezes At "bootstrapper has crashed" Or Something Like That
Please Help Me
Thanks