SAO link start

[jpgamer1027]

To put it bluntly, I'm wanting to have the SAO link start video open every time I log into my computer. (For reference I'm running Windows 10) so far it's been working; however I want to improve on it but don't know where to start, I have a shortcut running the .BAT script every time I log in and have the video playing through windows media player but there is still room for improvement The areas I want to fix is as follows:
1. How fast it loads up before my computer can display my background screen
2. A better media player that can launch fullscreen without it showing the pause button or it looks like a video
3. only allowing it to play after I've logged into my computer

Below I'm going to attach what I have so far on the .BAT script and any input is welcome, I'm still new to programming in general but I'm not worried about having to learn to make it work, the code below Is what I have so far and hopefully I can get some feedback on how to improve it so It looks more refined.

[CODE lang="bash" title="Start up"]START "" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Windows Media Player.lnk" C:\Users\thefl\Desktop\Linkstart\SAO2.mp4 /fullscreen
TIMEOUT /T 21
taskkill /f /im wmplayer.exe
[/CODE]