What do you mean you lost your old one? Stickers typically stick.
Well you don’t need to ditch the SSD but a modern Windows should never be on a mechanical drive. Newer games also demand SSDs more and more so check their requirements as well. Ideally HDDs are only used as a data grave, not for things that actively read and write things frequently
What’s your RAM? Maybe it’s too much for your memory controller to handle.
I got the email notification about that sale like half a day before it ended. The email came at 9pm yesterday and when I got home from work today and went to buy some stuff it was all over. No idea how they thought such as late email would be a good idea