blank screen, disk partition

I have a computer toshiba, i try to make it a hackintosh so i made a disk partition, the computer show a blank screen after i try too many times to install mac os x 10.6. I couldn't install it on the mac os x partition, im pretty sure that the computer start with the mac os x disk partition, the mac os x 10.6 partition is blank, i did not install the software, i would like to know how can i start the computer with the windows partition, if i want to start the computer with the windows partition i have to do something else to me to access to the windows patition, i didnt lose any of my data on the windows partition. thanks and i hope you'll can help me with this hard drive problem