After installing windows 7 on my macbook pro, i cannot access my mac

After installing windows 7 on my macbook pro late 2011, when I try to access the mac side of the computer it just stays in "thinking" mode and will not open up the mac. Windows side opens and works ok.
I only know enough to try to uninstall windows 7 then hopefully open the mac and possibly reinstall the windows 7.
PROBLEM: I only know how to uninstall windows 7 from the mac side (in the bootcamp) BUT cannot access it??
Any help. Thank you
<Edited By Host>

Hi craig1045,
It is possible that the file system for the volume containing the Mac operating system, or the OS itself has become damaged. I suggest that you follow the steps in this article to try to repair them -
A flashing question mark or globe appears when you start your Mac
http://support.apple.com/kb/TS1440
Specifically -
If your installation of OS X needs repair
If you don't see your startup disk displayed in Startup Manager, or if you see a prohibitory symbol (⊘) appear, your startup drive may need directory repair, or OS X may need to be reinstalled.
If you only see a disk named "Recovery HD" in Startup Manager, select it instead. You can also start from OS X Recovery by holding down Command and R on the keyboard at startup.
From the Utilities menu, choose Disk Utility.
In the Disk Utility window that appears, select your startup disk (usually named "Macintosh HD") from the left side of the Disk Utility window.
Click the First Aid tab.
Click Repair Disk to verify and repair any issues with your OS X startup disk.
After repairing the disk, try to start up normally. 
If none of these steps resolve the issue, start from OS X Recovery and reinstall OS X.
Thanks for using Apple Support Communities.
Best,
Brett L

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