are you trying to install the CD on the new computer? Does it have a CD drive?
If you first installed from the CD it may not let you download it or install the CD on another computer. There is a problem if you first installed the CD. It doesn't connect you to an account you can find. You have to call in and ask for a new download and a new License Code.
Contact Customer Service
5am-5pm Pacific Time
Monday-Friday
https://support.turbotax.intuit.com/contact/
What is the Turbo Tax phone number
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
