can some one plase give guidance as to how to run Snow OSX Universal 10.6.2 on dell studio 1555

System:
Dell Studio 1555
IntelCore2Duo P8600
15.6in Widescreen HD (1920 x 1080)
4096MB DDR2
512MB ATI MObility HD4500
Intel Wifi Link 5100

i have been able to install the os via a usb succesfully... but it always gets stuck on a blank screen...
i tried -v and safe mode boot but still no effect

the last lines on the -v boot are
appleintelcpupowermanager tomed out
fakescm key not found length -1

apart from this there is an error of sound enablers...
kindly help me