Hi,
There are a number of things that can affect the boot up speed. I would recommend starting by checking the startup tab in task manager and disabling any programs that aren't related to your hardware and you don't need to launch with Windows.
I would also recommend doing a system integrity check just to make sure there's no ongoing issues with your Windows installation. You can do this from a command prompt with "sfc /scannow". This will take awhile but if it finds any integrity violations it will try to repair them and notify you afterwards if it's unable to.
Please try these steps and let me know if you are experiencing issues still afterwards, so that we can troubleshoot further.