Boot Camp Keeps Failing Me.

i have imac mid 2010 running lion 10.7.3

there out there having same problem me can't partition hdd?

has been running 2 days straight , no sign of unresponsive reaction keep running , running have tried updating mac knew reply with, update mac try again not working either get's stuck on installing updates after shut down.

have attached picture of screen stuck on.

thanks,
shawz

 

attached files:

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update

update:

-i managed fix problem backing of data (manually, not via time machine)
- using mac command screen on load-up (cmd+r) go disk utility , erase , repair mac's internal hdd there
-did complete restore of os x lion
-went in boot camp assistant without data on mac operating software , tried partitioning again , worked perfectly
- computer restarted , went loading windows, install screen loaded , half way through installing had power cut. luck

new problem:
* turned mac on find out nothing else everytime mac loads trying boot either corrupted windows operating software or windows disk inserted.
**it stuck on black windows bios screen white dash in top left corner, flashing, going on hours nothing happening.**

know how fix this? please?

 

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