Black Screen following install, can't boot back into Lion

Hi all,
I just tried to install Windows 7 Ultimate 64 via Bootcamp on my Late 2010 iMac (21").
Following installation (it completed installation fine) right before the part where the dialogue says 'Setting up your computer for the first time', the screen goes black and nothing appears to be happening.
I cannot boot back into Lion by holding Alt- it does nothing.
Holding C to boot from disk keeps brigning me to the same Windows Error Recovery screen where I am prompted to 'Start Windows Normally' or in the various Safe Modes.
Trying to start it normally results in this hanging black screen, trying to start it in safe mode results in a dialogue saying 'Setup cannot be completed in Safe Mode' and restarts the computer.
Obviously this is quite a tricky situation, I'd appreciate any help to make some part of my Mac usable again,
Thanks in advance for any input.
tl;dr:
Can't boot into Lion
Any action available to me in Windows results in the same loop of black screen hanging.
I'm not even sure where I can go to try and change any settings...

Reboot, hold the option key down when you hear the chime, release it when the boot manager appears. Select OSX as the startup. Once started go to Apple>System Preferences>Startup Disk and make OSX the permanent choice until you get the Winjunk running, even better, remove the Winjunk partition and stay in the light.
You might find it useful to read this, all kinds of basic information regarding OSX, no need to not know what to do next.

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    -> But I am not able to get back into my application when I click on the IE provided Back button (Alt+Left) -> Any amount of invoking Back button makes the system getting looped into this Start up page of index.htm only -> When I Close Tab (Ctrl + W) or Close ( X ) -> The window session gets closed and I have to repeat all by relogin once again.
    How can I get back into my application aftermath invoking Start up page of index.htm ?
    (I can always get back into the application easily by erasing those parts in the url which refers to this RoboHelp linkages – but this certainly looks non-polished work)
    Help Please
    Cheese – Vipin Nambiar, Bangalore

    Hey Jeff, I used Internet Explorer 10.0.9200 and Google Chrome 26.0.1410. Alas - it is the same behavior.
    (But Jeff : When I used Microsoft HTML Help as primary layout to generate chm file , My Help when launched from my Application opened in a new browser window and when I closed this Help browser window did not close my application. Looks like need to write few liner code to get this issue settled )
    Thanks Indeed of lots for your concerns Jeff !!!

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