Ubuntu 9.10 and Lenovo G550 problem

Hello,
I have one Lenovo G550 recently purchased. I've tried to install Ubuntu 9.04 and 9.10, but both OS wouldn't boot. I'm not sure where the problem lies, as I'm Linux newbie and all I get is a dark screen.
I haven't tried to install it into a partition (because I'm afraid to lose the "one key recovery" software), but I've tried to install it via Wubi and also tried to run its live versions. All of them ends the same way: the LCD is turned on, but shows no image. I've tried to access the terminal (by pressing CTRL+ALT+F1), but nothing happens...
Do anyone have some idea about what is happening?!
Thank you.
Edit: I re-tested version 9.04 with no-acpi and it worked fine.

Hi
Tries with Ubuntu 9.04, this works well.
same thing happened to me. greetings

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