As the topic says, I’m thinking in buying a new computer, but I wouldn’t like to lose my avast license. Would I?
No you wont lose your license if you saved it to a safe place after you received it via email, all you need to do is uninstall your paid version of avast from the current system and install a fresh copy of avast on the new system and reinstall the license in the same manner as you did the first time.