Mac OS X Lion donesn't start after Windows 8 installing

I'm having some troubles booting from Mac OS X Lion after installing Windows 8 Release Preview on bootcamp partition.
I've made these steps.
Install Windows 8 Consumer Preview using bootcamp
Upgrade Windows 8 Consumer Preview to Release Preview
Reboot the system and hold option key.
On bootcamp select Machintosh HD
Mac OS X Lion doesn't start, or after a lot of time, it presents me the accounts screen but I cannot select anyone, trackpad or keyboard doesn't works!
I tried to boot from Recovery HD, but keyboard and trackpack doesn't work too.
I tried to boot from Snow Leopard installation CD, but it also doesn't work.
If I restart and boot in Windows 8, everything works fine!
I have a Macbook Pro 15".
Could someone helps me?

Take a look at the partitions on the drive.
What is there?
When you do what you did it keeps 20GB Windows.old which you can delete after, and if the upgrade fails on Windows 8 CP you are left with Windows you had, and 20GB Windows.install temp file
So whatever you do using your method you needed to have 30GB of free space or more to perform the change.
And you should have a clone or backup of both that you can restore if needed.
Carbon Copy Cloner for instance to make an image of Lion and Lion Recovery.
WinClone 3.x to image Windows - though may not need to.
Windows Easy Transfer to make it quick and easy and act like it was an upgrade with all your settings (but not all programs and 3rd party).
Did you download the ISO also and burn to DVD? The download assistant for 8 will assist with that and then you can use Windows 8 DVD for system recovery.
Not a mind reader could know what the state of your system is now and if OS X is there or got clobbered.
Zap PRAM and try to boot from one of your DVD systems. (there are no CDs anymore they don't fit)

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Owner & Operator of the following:
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