[idi banashapan]

I would say putting the old Windows 8.1 SSD into the new laptop is very unlikely to work. Windows ties itself to the hardware it was originally installed on, and a completely different motherboard, chipset and drivers will almost always cause boot failures. Nothing will be damaged, but it will almost certainly refuse to start or end up in an automatic repair loop. IIRC, there used to be a monitored limit on HW changes with windows that reset every 180 days to prevent this kind of thing.

Even if it did somehow boot, Windows 8.1 wouldn’t activate on the new machine and you’d probably lose support for key components like Wi-Fi, graphics and the trackpad, since modern laptops rarely provide 8.1 drivers. In short, it isn’t a practical plug-and-play option.

If the goal is to run Photoshop Elements 6, the safest and most reliable route is to run a small Windows 7 or 8.1 virtual machine on the newer laptop. PSE6 works extremely well in a VM and avoids the risk of breaking your host system again.