I had a call from a client yesterday with a POS station that couldn’t connect to the network. After a few brief exchanges of information, he told me that he had updated the Windows 7 machine to Windows 10. This PC is about 7 years old and in no way, shape or form was up to the very processor intensive nature of Windows 10. He also hadn’t bothered to manually update the drivers, which is a very necessary part of an upgrade on an existing OS.
Fortunately, the uninstall feature worked like a charm and he was able to get back to Windows 7 in about 30 minutes.
Be aware that Microsoft has a huge stake in adoption of the OS – that’s why they have made it free. But be aware the older hardware will almost certainly have issues!