For re-installation issues on a new computer, you may need to contact Corel Support directly to reset your activation count or verify your license.
If you have lost your key, you can recover it through official Corel Support channels: coreldraw 13 product key
A product key is a unique alphanumeric code (usually 20-25 characters, grouped in sets of 5) that acts as a digital key to unlock the software. For CorelDRAW X3, this key proved you legally purchased the software. For re-installation issues on a new computer, you