While i was running boot camp to install windows 7 i had to cancel operation. Now my mac comes up black screen with a curser at top

while i was running boot camp to install windows 7 i had to cancel operation. Now my mac comes up black screen with a curser at top

First of all, start your Mac with the Alt key pressed until the boot manager apears. If your keyboard is wireless probably you should press the power button at the same time you start the Mac.
After, go to Bootcamp Assistant and remove the windows partition and do all the process again.
Remember to remove all the USB/Firewire/Thunderbolt devices that are attached to the Mac during the windows installation.
Once windows boots for first time, install windows support software with all the drivers.
IMPORTANT: If the windows partition doesn't boot correctly (Black screen with white blinking cursos at the left top corner) do this steps to boot windows:
1- Start the Windows Installation DVD at system start.
2- Click on Repair System, not install.
3- Select Command Prompt
4- Run these 3 commands: (Press enter for each command)
     Bootrec.exe /FixMbr
     Bootrec.exe /FixBoot
      Bootrec.exe /RebuildBcd
5- Exit command line (type exit)
6- Click on Restart button.
7- Boot the Mac and you will see that It automaticaly loads windows
Tell us how it goes!!
PS: Sorry for my bad english!!!

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