A operating system can't copy itself onto another drive without cloning software. Cloning software often produces errors. Best to copy data onto flash drives. Fresh install new operating system onto new drive. Reinstall data from flash drives.
Windows operating systems are available from Microsoft via the Microsoft download tool, and of course, the serial code on the genuine sticker will validate them. A Windows 7 serial will validate a 10 install provided one is sticking with the same versions such as "pro" or "home". Some older 7 machines have such anemic CPUs that 10 won't fully update once installed.
Auto updates from 7 to 10 via the built in tool can be problematic and produce errors. A fresh install is best. Also, 10 may insert generic drivers for video cards, sound cards, and such if the manufacturer never produced newer drivers.
Also note, all SSDs are not equal and some require certain chipsets for TRIM to work properly. TRIM is for SSD what defrag was for a mech drive.