Topic: How do I boot my MacBook Pro into Windows using bootcamp
Hold Option key
Hold the Option key on the keyboard as the computer boots up. It will give you the option to choose any bootable hard drives or partitions on the computer, including any bootable CD/DVDs.
Here are the other keys you can use during bootup.
Press X during startup Force Mac OS X startup
Press Option-Command-Shift-Delete
during startup Bypass primary startup volume and seek a different startup volume (such as a CD or external disk)
Press C during startup Start up from a CD that has a system folder
Press N during startup Attempt to start up from a compatible network server (NetBoot)
Press T during startup Start up in FireWire Target Disk mode
Press Shift during startup start up in Safe Boot mode and temporarily disable login items and non-essential kernel extension files (Mac OS X 10.2 and later)
Press Command-V during startup Start up in Verbose mode.
Press Command-S during startup Start up in Single-User mode