Brand new MBP stuck on grey Apple start up screen

My new MBP 13" arrived today. I removed the SSD from my current Macbook and installed it in my MBP. I pressed the power button, and it got stuck on the grey start up screen with the grey Apple for 5 minutes. I shut it down and put the SSD back in the Macbook - worked perfectly. So I tried installing it again in the MBP, and had the same problem. It just stays stuck on the grey screen with the Apple.

Last night the electricity went out and my power surge protector was not working so my iMac just force shut downed.
So, when the electricity came back i turned on my Mac but it is *Stuck in the Startup/Boot Screen with a Grey Apple Logo,a Empty Progress Bar with stays for 1 or 2 minutes and a small Spinning Wheel which would Spin Forver! I Have tried the SMC and Pram reset but no use, i have also tried to insert my OS X Lion 10.7 Installation disk and it would not load if i hold the C Key in the Startup, I Have Managed to go to Disk Utility Through "Recovery HD"  but the Volume "Macintosh HD" is Greyed out and Unmounted and i cannot repair it. There are some files that i'd like to Recover if there is a way to fix it without deleting files.
**PLEASE HELP ME FIX THIS!**
Details about the iMac:
iMac 21.5 Inch i think from Mid 2010,
OS X Lion installed maybe 10.7.2 or 10.7.3 (im not sure)

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