On a notebook Lenovo G5 with originally Windows 8.1 and HDD hard drive was now Windows 10 Pro with a valid legally purchased key installed on a SSD. Unfortunately, no activation was possible.
Bad luck!
With such information you would have to read a glass ball to give a reasonably reasonable answer.
Write at least:
how did the installation go (error-free or with which error message)
what happens with the PC
which messages on the screen
does the PC even start?
etc…
Only those who ask reasonably, get a reasonable answer (also read the
So it was installed by a bootable USB stick on a new SSD and the Windows 10 also runs perfectly on the notebook. Only the activation failed.
Yes, then use the telephone activation offered.