In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.
Depends of your GPU, if it’s the Intel one on the CPU, then not on Windows, only on Linux.
IF you have an Nvidia GPU on that notebook, then yes, but expect low performance.
You can’t download hardware, you have to physically buy it.