Is GarageBand available for Windows ?
Since, GarageBand is an Apple product the obvious answer to the above question is sadly a No. Apple just does not like its application to be used on any other OS. And I guess that is how it is still managing itself as an independent product till date.
Anyhow, if you desperately need to use GarageBand on your Windows PC and Laptop then you will need to go through some twitches here and there. There is just always an alternative to everything and similarly in this case too.
You can refer to the following article to be able to use GarageBand on your Windows PC. It is a step by step guide on how to install and use GarageBand on Windows PC.
The only extra things you will need to do while following the tutorial is install an extra application along with the official GarageBand file and configure it accordingly and you are all set to take off on your musical journey.