Kernel Panic problem

[ike412]

I installed OSX on my Acer Aspire 5050.
I boot and get a kernel panic.
When I boot with -v, I get the following message:

"Backtrace terminated-invalid frame pointer 0
Kernel loadable modules in backtrace (with dependences):
com.apple.driver.AppleEFIRuntime(1.1.0)@ (hexadecimal number) -> (a different hexadecimal number)

BSD process name corresponding to current thread: kernel_task

Mac OS version:
Not yet set"

The problem seems to be with EFI (which I did not install before installing the OS).
Any help would be greatly appreciated.