Need help! White screen and hard drive

I have a MacBook Pro A1211 I got off Craigslist. It needed a new logic board and hard drive so I got both. My problem is I just found out the hard drive has windows on it and when I power on the MBP all I get is a white screen. My question is is there a way to get windows off that hard drive while its installed in the MBP? I've tried every command I could find online to push when I power on the MacBook but it does nothing. I bought a copy of snow leopard 10.6 factory sealed and put it in the super drive but it just spins for a while and then stops. The fans constantly run also but I'm new to MacBook so I don't know if that's suppose to happen. I got the disk management to come up one by holding down option and power on but it didn't give me the option of choosing the SuperDrive and I can't get it back up. It's almost like the keyboard isn't working. If there's any suggestions y'all can give me I'd appreciate it.

Startup - Gray, Blue or White screen at boot, w/spinner/progress bar
Startup - Gray Screen
Startup Issues - Resolve
Startup Issues - Resolve (2)

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storage devices to work, they probably should be formatted in a
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If the WD unit is not seen by Windows computers on your network,
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Here are some pics:
http://i48.tinypic.com/2qmgjgx.jpg
http://i48.tinypic.com/2i1gq5v.jpg
http://i49.tinypic.com/wqx838.jpg
http://i48.tinypic.com/f03xbb.jpg
http://i48.tinypic.com/23r0j5t.jpg
http://i47.tinypic.com/f4r6gh.jpg
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The dv7 notebook Maintenence & Service guide has the information that you need. See the illustrated parts list for the part number.
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****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

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