Unable to boot back to os x after installing windows7

I'm using iMAC with all the softwares updated.
As the title stated, I'm unable to boot back to my mac os x after i successfully installed windows 7.
I hold on to the Option key / Alt key but to no avail.
I'm able to see my Mac HD via My Computer from windows 7.
I even manage to install drivers from the os x cd itself to windows 7.
Just thinking is it something wrong with the MBR of mac os x or windows that caused this issue to arise.
Any help or guide will be helpful!
Regards,
xiang

X on startup should take you into OS X
For now, go to Windows control panels : Boot Camp and change the default OS there.
Whether it is keyboard, bluetooth, or karma, some people's systems do seem to have trouble on the timing or getting Option/Alt to bring up the EFI Boot menu/manager.

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Message was edited by: michael_toshiba_forum

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I need help. I have been at it for days, I have googled every which way but I am not able to fix this. Basically my problem is that I am unable to log in to my user account after I used Bootcamp to install windows 7. I will explain what I did up until I couldn't log in.
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Go to Solution.

Use the Toshiba recovery media creator
Your support page is here - http://support.toshiba.com/support/modelHome?freeText=3093575
Your user guide is here - http://support.toshiba.com/support/staticContentDetail?contentId=3116945&isFromTOCLink=false
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When you create recovery DVDs/media, the system will prompt
you to insert several blank DVDs or connect one or more USB flash
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1 Click Start, All Programs, My Toshiba, and then Recovery
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(Sample Image) TOSHIBA Recovery Media Creator dialog box
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media you want to use.
3 Check the Information area of the dialog box to determine the
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storage space required for copying your system’s recovery files
to USB flash drive(s).
NOTE
76 Getting Started
Recovering the Internal Storage Drive
4 Do one of the following:
❖ If you are copying files to DVD, insert a blank DVD into
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❖ If you are copying files to a USB flash drive, connect a
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All information stored on your DVDs or USB flash drive(s) will be
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sure to save the information stored on your external media to another
storage device before executing this procedure, or use blank media.
5 Click the Create button in the TOSHIBA Recovery Media
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If you are copying the recovery files to DVDs, be sure to label each
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If you have created recovery DVDs/media for your system, you can
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system to a new internal storage drive from your recovery
DVDs/media. For instructions on creating recovery DVDs/media,
see “Creating recovery DVDs/media” on page 74.
NOTE
NOTE
Getting Started 77
Recovering the Internal Storage Drive
With recovery media, you can:
❖ Recover to out-of-box state (recommended recovery method)
❖ Recovery of factory default software with user’s data
❖ Recover without changing the internal storage drive partitions
❖ Recover to a custom size partition
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restored. Any files that you created are not restored during this
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external media using Windows® Backup or another backup program.
For more information, see “Backing up your work” on page 112.
To recover your internal storage drive from recovery DVDs/media:
1 Make sure your computer is turned off.
2 Do one of the following:
❖ If your recovery files are on DVDs, insert the first recovery
DVD into your optical disc drive.
❖ If your recovery files are on a USB flash drive, connect the
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3 Turn on your computer. When the initial TOSHIBA screen
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Erasing the Internal Storage Drive
7 Select one of the following options:
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8 Follow the on-screen instructions to complete the recovery
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9 Click Finish to restart the computer.
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