Ok, the problem just got simpler. One choice would be to clone your old drive to the SSD, but from your comments, I'm guessing you don't want to do that. So, you will need to do a fresh install of Windows 10 on your new SSD. If you have installation media, that's easy. If not, use the Windows Creation Tool at this link: https://support.microsoft.com/en-us/help... to create a bootable USB or DVD for your installation. Your computer should be connected to the internet for the following
Install the SSD into your computer, then boot to your install media. If DVD, it should boot naturally there. If USB, you will need to select boot media thru BIOS selection or an F? key. Once booted to the Windows install media, just follow the directions. The system will restart a few times, but do not boot to the install media again. Let it boot to the new Windows install. If it asks to get new updates, let it do that.
When your install is complete, it will search for drivers. If you have them on DVD or USB, point the system there. If not, it will search for them on the web, but this takes longer.
When your install is complete, you will need to Activate the installation -- unless it has automatically activated during the process. Activation is not an issue. Microsoft uses a "hardware signature" to identify that you are reinstalling from a previous activation. The hard drive/ssd is not included in that signature, so it will immediately recognize your system.
That should be all it takes, but, if any further questions, post them here. Also, post to let us know that it worked.